Telecom Competencies: Service Quality and Customer Loyalty

Introduction and Industry Background

Historically, service quality in the telecommunications industry was largely determined by monopolistic service providers. These suppliers operated either as private companies under government regulation or as government agencies themselves, leaving customers with minimal control over the quality of services they consumed. The evolutionary transformation of telecoms technology began with the simultaneous advent of telecoms liberalization in the United States, the United Kingdom, and Japan in the mid-1980s. Liberalization created greater flexibility and new opportunities for entrants competing with incumbents — AT&T, British Telecom, and NTT — in those three countries (Fransman, 2004). The telecommunications industry in the country under study similarly followed a path of liberalization, with the government opening up cellular service by issuing licenses to commercial operators. This liberalization required the previously monopolistic, government-linked service provider to compete in an open market, creating business competition and giving consumers more choices and better service.

Traditionally, the industrial organization (IO) approach to competitive analysis holds that organizations should seek to create and maintain barriers restricting potential competitors from entering an industry (Bharadwaj, Varadarajan, & Fahy, 1993; Hamel & Prahalad, 1989; Lei & Slocum, 2005; Porter, 1985). Firms should also strive to retain customers by making it less attractive for them to switch to competitors. The extent to which an organization accomplishes these objectives constitutes its market control dimension, which is a function of several factors including industry characteristics, firm size, and stage in the organizational life cycle.

Porter's five forces analysis of the telecommunications industry provides an overview of the competitive landscape (Barney, 1995). Entry barriers are high for new companies because government-issued licenses are limited and capital investment requirements are substantial. Customers (subscribers) hold medium to high bargaining power, particularly following the implementation of mobile number portability (MNP) (Buehler, Dewenter, & Haucap, 2006; Huan, Xu, & Li, 2005; Kim, Park, & Jeong, 2004). Suppliers hold relatively low power because better inter-operability between vendor equipment, driven by industry standardization, has reduced their leverage. Competition among incumbents is fierce in terms of price and service features. Substitution is emerging rapidly as more companies provide low-cost calling via VoIP and online chatting through smartphone applications — bundled with data packages — which erode traditional voice revenue.

In contrast, the resource-based view (RBV) focuses on identifying and developing a company's resources, capabilities, and competences following thorough competitive analysis and strategy formulation, in order to gain competitive advantage within the industry (Bowman & Ambrosini, 2003; Coyne, 1986; Coyne, Hall, & Clifford, 1997; Fahy, 2000; Hall, 1992). Rather than emphasizing the external environment, this approach directs the company inward — to define, measure, analyze, implement, and control its own resources, capabilities, and competences in ways that are valuable to customers. Following this logic, Bowman and Faulkner (1997) noted the importance of value-activity competitive strategies. Because buyers perceive price rather than cost, they argued that sustainable competitive advantage is achieved by offering products or services that customers perceive as: (1) better than those of the competition regardless of price; (2) equal to the competition but at a lower price; or (3) both better and cheaper. Xerox's intense focus on measuring customer satisfaction illustrates this logic: high-quality products and services designed to meet customer needs create high levels of customer satisfaction, which drives greater customer loyalty, which is the single most important driver of long-term financial performance (Jones & Sasser, 1995).

This research project explores the competitive landscape of the cellular telecommunications industry. It first describes the extensive literature on organizational competencies and strategy formulation in competitive environments. It then develops a model framework and postulates several hypotheses — based on the RBV approach — that service quality and network quality drive customer satisfaction and loyalty. Customer survey data were subsequently collected and analyzed to test the framework. Despite the intensely competitive landscape, cellular firms can benefit from understanding the competencies approach to developing sustainable competitive advantage.

Organizations can display three types of market control: (1) control over market access available to prospective competitors (entry barriers); (2) control over suppliers; and (3) control over customer access to competitors (switching costs) (Jones, Mothersbaugh, & Beatty, 2000, 2002; Parnell, 2006). Many airlines, for example, attach future benefits to their tickets through frequent-flier programs that reward customers who fly with one or a limited number of carriers, effectively increasing the switching cost to another airline. In the deregulated telecommunications industry, such controls have been progressively removed. Before the introduction of mobile number portability, consumers were reluctant to switch operators because changing their phone number required notifying friends and business associates. With MNP in place, subscribers are no longer restricted to their current operator merely to avoid the inconvenience of changing numbers.

Customer loyalty can be measured through key performance indicators (KPIs). The number of subscribers and the average revenue per user (ARPU) serve as performance KPIs for cellular operators. Subscriber numbers can be grown through aggressive marketing using the four Ps: price/package, product features, place (coverage), and promotions. The ARPU — the monthly charge incurred by customers — has been declining steadily due to strong competition and the availability of VoIP for long-distance communication via computer and smartphone. Operators constantly develop new services such as MMS, 3G video calling, and internet data plans to offset falling ARPU. The erosion of ARPU will accelerate further as market penetration approaches 100%, a scenario already facing many operators today. Retaining existing customers thus becomes critical when MNP is in place, and the foundation of retention is total customer satisfaction and delight (Jones & Sasser, 1995). Customer satisfaction alone is not sufficient to predict customer behavior; customer loyalty is a better indicator of customer retention and therefore of firm performance (Bowen & Chen, 2001; Oliver, 1999; Sivadas & Baker-Prewitt, 2000).

The rise of the information age has renewed interest in firm resources. As physical boundaries have weakened in importance and transaction speed has increased, drawing clear industry and strategic-group lines as a basis for strategy formulation has become more challenging. Sustaining competitive advantage is a central concern in an environment where competitive and customer information seems freely available. Consequently, a focus on organizational resources that enable a firm to establish and sustain competitive advantage in a faster and more complex environment has become increasingly important (Parnell, 2006).

Resources and capabilities do not automatically confer competitive advantage on a business (Bharadwaj, Varadarajan, & Fahy, 1993). Realizing advantage requires coordinated exploitation of those resources. Capabilities are a special type of resource — firm-specific in nature — that enhance the productivity of a firm's other resources. Creating capabilities is not simply a matter of assembling a team of resources; capabilities involve complex patterns of coordination between people and between people and other resources (Grant, 1991). Competence is the ability of an organization to sustain coordinated deployments of resources and capabilities in ways that promise to help it achieve its goals (Sanchez & Heene, 1997). While resources are the source of a firm's capabilities, capabilities are the primary source of competitive advantage (Grant, 1991). When a competence serves as the source of a firm's competitive advantage over rivals, it is called a core competence (Hitt, Ireland, & Hoskisson, 2005).

The notion of core competences, particularly technological competences, has long been part of strategic thinking. As early as 1957, Selznick used the term "distinctive competence" to denote what a particular business was uniquely good at relative to its close competitors. A firm can utilize its resources and capabilities to build competences that provide competitive advantage and thereby achieve above-average returns for the same investment (Hitt, Ireland, & Hoskisson, 2005). Competitive advantage is sustainable when the capabilities and competences used to build it are valuable, rare, costly to imitate, and non-substitutable. As Grant (1991) argues, firms are likely to use a combination of resources and capabilities in the pursuit of sustainable competitive advantage. If a company's resources and capabilities lack durability or are easily transferred or replicated, the company must either adopt a short-term harvesting strategy or invest in developing new sources of competitive advantage. Capabilities and competences in managing service quality, network quality, and customer satisfaction are therefore important sources of competitive advantage for any cellular firm.

Almost all organizational mission statements contain some commitment to excellence in service or product quality and customer satisfaction. Most companies engage in measurement to gauge customer perceptions of quality. Since perceived quality and customer satisfaction can be considered leading indicators of financial performance, systematic and valid measurement is critical. More importantly, it is essential for each organization to establish empirical linkages between these indicators and financial performance measures (Babakus, Beinstock, & Van Scotter, 2004). The best way for a company that produces goods or services high in experiential quality to win new customers is to thoroughly satisfy its existing customer base (Harvey, 1998).

A growing body of empirical work supports the fundamental logic that customer satisfaction positively influences customer retention (Anderson, Fornell, & Mazvancheryl, 2004; Anderson & Sullivan, 1993; Boulding, Kalra, Staelin, & Zeithaml, 1993; Gerpott, Rams, & Schindler, 2001; Oliver, 1993; Rosenberg & Czepiel, 1983). Increasing retention secures future revenues (Anderson, Fornell, & Lehmann, 1994) and reduces the cost of future customer transactions such as those associated with communications, sales, and service (Reichheld & Sasser, 1990). Greater customer retention also indicates a more stable customer base — one that provides a relatively predictable source of future revenue and is less vulnerable to competition and environmental shocks (Anderson & Sullivan, 1993).

The telecommunications industry has undergone profound global changes over recent decades. Fransman (2004) analyzed the transformation of the "old telecommunications industry," which was fundamentally restructured in the mid-1980s with the dismantling of dominant monopolies in countries such as Japan, the United States, and the United Kingdom. This wave of liberalization reached Europe and Latin America in the 1990s. Even more significant was the technological advance that gave rise to the "infocommunication industry," supported by a triad of technologies: packet-switching, internet protocol, and the World Wide Web (Fransman, 2004).

In the country under study, the state acted as the sole provider of telecommunications services until the mid-1980s. The privatization process saw a strong movement of local companies partnering with foreign technology suppliers seeking to position themselves in the local market. The industry was subsequently liberalized and opened to competition. The lower entry cost and faster deployment of cellular service compared to fixed-line service provided new players with the opportunity to capture market share from the entrenched state company quickly. The competitive landscape of this industry therefore serves as a rich field for the study of competitiveness, customer satisfaction, service quality, and customer loyalty.

In the highly competitive telecommunications service industry, incumbents must be increasingly innovative in setting competitive strategies to maintain their position. Understanding the reasons behind one firm's success over its competitors enables managers to chart a better course for their companies. Failing to identify, develop, and exploit competitive advantages hinders growth and profitability and renders managers ineffective.

The research questions guiding this study were: (1) What makes a telecommunications firm more competitive than others? (2) What is the relationship among perceived service quality, network quality, customer satisfaction, and customer loyalty of cellular service providers? The corresponding objectives were: (1) to understand the resource-based view of firm performance through a literature review of organizational competences in order to determine what makes a firm more competitive; and (2) to identify and empirically prove the relationships among perceived service quality, network quality, customer satisfaction, and customer loyalty of cellular service providers.

Literature Review: Strategy, Resources, and Customer Satisfaction

For perceived service quality, the following hypotheses were formulated based on the SERVPERF framework:

H1a: Tangibles have a positive influence on perceived service quality. H1b: Responsiveness has a positive influence on perceived service quality. H1c: Reliability has a positive influence on perceived service quality. H1d: Empathy has a positive influence on perceived service quality. H1e: Assurance has a positive influence on perceived service quality. H1f: The regression of perceived service quality on the five dimensions is significant.

For perceived network quality, five dimensions were posited — speed, accuracy, availability, reliability, and security:

H2a: Speed has a positive influence on perceived network quality. H2b: Accuracy has a positive influence on perceived network quality. H2c: Availability has a positive influence on perceived network quality. H2d: Reliability has a positive influence on perceived network quality. H2e: Security has a positive influence on perceived network quality. H2f: The regression of perceived network quality on the five dimensions is significant.

For customer loyalty, an integrated framework linking perceived service quality, perceived network quality, and customer satisfaction was adopted:

H3a: Customer satisfaction has a positive influence on customer loyalty. H3b: Perceived service quality has a positive influence on customer loyalty. H3c: Perceived network quality has a positive influence on customer loyalty. H3d: The regression of customer loyalty on service quality, network quality, and customer satisfaction is significant.

Two separate streams of literature inform this research project. The first is the strategic management literature, which uncovers business-enhancing concepts that help firms succeed in the marketplace. The second is the customer satisfaction literature relating to service quality, customer satisfaction, and customer loyalty.

Businesses need competitive advantages to outperform rivals and achieve returns above the industry average. The two generic types of competitive advantage are cost advantage and differentiation advantage (Porter, 1985). Competitive strategies are formulated to attain these advantages. Their sources are resources, capabilities, and competences (Hall, 1992). If the resources, capabilities, and competences used to derive competitive advantage are valuable, rare, costly to imitate, and without substitutes, then the advantage is sustainable and long-term firm performance is assured (Grant, 1991; Hitt, Ireland, & Hoskisson, 2005). Customer service quality and network service quality are sources of competitive advantage in the cellular network industry (Birgit & Charles, 2001; Huan, Xu, & Li, 2005; Wang, Lo, & Yang, 2004; William & Anuchit, 2002). Customer satisfaction is a differentiation advantage achieved through focused management effort (Parasuraman, Zeithaml, & Berry, 1988), and customer loyalty is a performance measure of the resulting differentiation advantage (Bowen & Chen, 2001; Oliver, 1999).

Strategic management researchers have long been preoccupied with the phenomenon of persistent superior performance by highly successful firms. The traditional industry analysis approach emphasizes industry structure and market position (Porter, 1985), while the resource-based view highlights a firm's unique resources, core competences, and dynamic capabilities in a rapidly changing global market (Barney, 1991; Prahalad & Hamel, 1990; Teece, Pisano, & Shuen, 1997).

There are broadly two generic types of competitive advantages: cost advantage and differentiation advantage (Bharadwaj, Varadarajan, & Fahy, 1993; Porter, 1985). A competitive advantage is something a firm does better than rivals in the same industry that either generates higher demand or leads to lower costs (Greenwald & Kahn, 2005). Higher demand results from differentiation. The cost advantage of a firm allows it to earn higher profits or to compete with a lower price while offering the same features and quality as competitors.

Parnell (2006) proposed a conceptual framework for business strategies that incorporates Porter's original framework, follows the logic of the RBV, and is sensitive to recent changes in the competitive environment. The framework is built on the fundamental dimensions of market control and value. On these two dimensions, Parnell identifies five strategic choices: (1) emphasize value strategy when value advantage is high but market control is low; (2) emphasize market control strategy when market control is high but value is low; (3) adopt a moderate market control and value strategy when neither dimension is extreme; (4) adopt a strong market control and value strategy when both are high; and (5) de-emphasize both when both are low.

Hao (1999b) argues that to achieve persistent superior performance, a firm needs a constellation of competitive advantages. Superior firms typically do not just do one thing well; they excel in multiple aspects. To sustain competitive advantage over time, a firm must nurture an evolving constellation of multiple advantages and undertake timely renewals. Competitive advantage arises from differential firm attributes and characteristics that allow one firm to create better customer value than others. Sources include ownership of assets or positions, access to distribution and supply channels, and proficiency in business operations — including knowledge, competence, and capability (Hao, 1999c). Mische (2000) concurs that high-performance companies develop and sustain competitive advantage through flawless operations and agile, adaptable organizational structures.

Coyne (1986) establishes conditions for sustainable competitive advantage (SCA), identifying three necessary conditions: differentiation in product attributes, durable differentiation, and sustainability of SCA. He identifies four types of capability differential that make differentiation durable: "business system gap," "position gap," "organization quality gap," and "regulatory/legal gap." Hall (1992) extended Coyne's model by identifying and categorizing the intangible resources that feed into these capability differentials, defining them as "functional differential," "positional differential," "cultural differential," and "regulatory differential." Companies achieve sustainable competitive advantage when they consistently produce product and delivery systems whose attributes correspond to the key buying criteria for the majority of customers in their targeted market.

Grant (1991) notes that in a world of volatile customer preferences, an externally focused orientation does not provide a secure foundation for long-term strategy formulation. A definition of a business in terms of what it is capable of doing may offer a more durable basis for strategy than one based on the needs it seeks to satisfy. He concludes that the most important resources and capabilities are those that are durable, difficult to identify and understand, imperfectly transferable, not easily replicated, and clearly owned and controlled by the firm. Grant proposes a five-stage resource-based framework for strategy formulation: (1) identify and classify firm resources; (2) identify firm capabilities; (3) appraise the rent-generating potential of resources and capabilities; (4) select a strategy that best exploits resources and capabilities relative to external opportunities; and (5) identify resource gaps that need to be filled.

Resource-based approaches to competitive advantage theory point to four characteristics of resources and capabilities as particularly important determinants of sustainability: durability, transparency, transferability, and replicability (Grant, 1991). Grant defines resources as the inputs into the production process — the basic units of analysis including capital equipment, individual employee skills, patents, brand names, finance, and so on. However, few resources are productive in isolation. Competitive advantages require the cooperation and coordination of teams of resources. Grant identifies a firm's capability as the capacity for a team of resources to perform some task or activity — a capability being, in essence, a routine or set of interacting routines. The intangible assets and people-based skills are probably the most important resources of the firm, although accountants are often reluctant to quantify them due to valuation difficulties.

At the corporate level, the core competence ideas of Prahalad and Hamel (1990) raise the question of how competences can be used to generate or enter new businesses. Selznick (1957) was perhaps the first author to use the word "competence" in an organizational context, defining it as commitments to ways of acting and responding built into the organization. Competence, then, is the ability of an organization to sustain coordinated deployments of resources in ways that promise to help it achieve its goals (Sanchez & Heene, 1997). Competence takes time, effort, and resources to develop, and firms are distinguished by their characteristic mixes of competence-building and competence-leveraging activities.

McEvily and Marcus (2005) explore the external acquisition of competitive capabilities through embedded ties that firms form in networks and alliances. They argue that joint problem-solving arrangements play a prominent role in capability acquisition by promoting the transfer of complex, difficult-to-codify knowledge. Hamel (1994) classifies competencies into three broad types: market access competencies (brand development, sales and marketing, distribution, technical support), integrity-related competencies (quality, cycle time management, just-in-time inventory), and functionality-related competencies (skills that invest products or services with unique functionality and distinctive customer benefits).

Hamel and Prahalad (1989; 1993) highlight a different approach to strategy — one that emphasizes organizational resourcefulness more than the resources currently controlled. They argue that familiar concepts like strategic fit can foster a static approach to competition, and challenge managers to consider "stretch" in addition to "fit." Managers at competitive companies can achieve greater results through five approaches: (1) concentrating resources around strategic goals; (2) efficiently accumulating resources; (3) complementing one kind of resource with another; (4) conserving resources where possible; and (5) recovering resources from the marketplace as quickly as possible.

Barney (1986) argues that environmental analysis cannot reliably improve one firm's expectations about the future value of a strategic resource better than another's, and therefore cannot alone be a source of competitive advantage. Analyzing a firm's skills and capabilities, however, can provide more accurate expectations. Strategic choices should therefore flow primarily from analysis of unique skills and capabilities rather than from analysis of the competitive environment alone.

Achieving customer satisfaction is the primary goal for most service firms today (Jones & Sasser, 1995). Increasing customer satisfaction and retention leads to improved profits, positive word-of-mouth, and lower marketing expenditures (Reichheld & Sasser, 1990). The literature highlights that dimensions and measurements of satisfaction vary with the service setting; satisfaction is not a universal phenomenon because customers differ in their needs, objectives, and past experiences. It is generally agreed, however, that service quality is distinct from customer satisfaction, though the exact boundary between them is somewhat blurred. Some researchers argue that while service quality represents an overall attitude toward a service firm, customer satisfaction is specific to an individual service encounter (Parasuraman, Zeithaml, & Berry, 1988).

Bleuel and Stanley (2007) studied the best and worst companies rated by customer satisfaction as of 2006 to determine whether there is a significant difference in financial performance. Their statistical results at a 5% confidence level indicate a financial reward for companies that focus on the consumer and a financial penalty for those that do not, clearly suggesting that companies failing to recognize the importance of customers will face serious threats to their financial health and corporate viability.

McDougall and Levesque (1996) investigated the major determinants of customer satisfaction — service quality, service features, service problems, and service recovery — and future intentions in the retail banking industry. They found that service problems and service recovery are the key determinants of customer satisfaction and switching intentions. Unsatisfactory problem recovery leads to dramatic declines in satisfaction and increased switching intentions. A subsequent study by McDougall and Levesque (2000) across four service settings (dentist, auto service, restaurant, and hairstylist) confirmed that both perceived value and service quality dimensions should be incorporated into customer satisfaction models.

Anderson et al. (2004) developed a theoretical framework specifying how customer satisfaction affects future customer behavior and, in turn, the level, timing, and risk of future cash flows. They found a positive association between customer satisfaction and shareholder value, with significant variation across industries and firms. Research by Cooil, Keiningham, Aksoy, and Hsu (2007), using data from 4,319 Canadian banking households over five years, found that changes in satisfaction are positively and nonlinearly related to the share of wallet a customer allocates to a particular service provider. Income and length of relationship were found to negatively moderate this relationship.

Anderson, Fornell, and Rust (1997) investigated potential tradeoffs between customer satisfaction and productivity. Their findings indicate that the association between changes in customer satisfaction and changes in productivity is positive for goods but negative for services. Both customer satisfaction and productivity are positively associated with return on investment (ROI) for goods and services, though the interaction between the two is positive for goods but significantly less so for services.

Traditionally, service quality has been defined as the difference between customer expectations and perceptions of service (Parasuraman, Zeithaml, & Berry, 1988). These researchers proposed the five dimensions of service quality: (1) tangibles — physical facilities, equipment, and appearance of personnel; (2) reliability — ability to perform the promised service dependably and accurately; (3) responsiveness — willingness to help customers and provide prompt service; (4) assurance — knowledge and courtesy of employees and their ability to inspire trust and confidence; and (5) empathy — caring, individualized attention provided to customers. Evidence for the SERVQUAL scale's reliability and validity was drawn from four independent samples: banks, credit card companies, repair and maintenance companies, and long-distance telephone companies. The empirical results showed that reliability is consistently the most critical dimension and empathy is the least important.

Cronin and Taylor (1992) investigated the conceptualization and measurement of service quality and its relationships to consumer satisfaction and purchase intention. They found that (1) a performance-based measure of service quality is an improved means of measuring the service quality construct; (2) service quality is an antecedent of consumer satisfaction; (3) consumer satisfaction has a significant effect on purchase intentions; and (4) service quality has less effect on purchase intentions than does consumer satisfaction. They concluded that the performance-based scale (SERVPERF) is more efficient than the SERVQUAL scale. Babakus, Beinstock, and Van Scotter (2004) further confirmed that both service and merchandise quality exert significant influence on store performance, mediated by customer satisfaction.

Network quality, as perceived by customers of a communications service, can vary substantially in complexity depending on the number of attributes by which it is judged. In this study, network quality relates to the functional features of the telephony service provided by cellular companies — including speed of connection, signal availability across geographic areas, and connection reliability that prevents dropped calls.

Richters and Dvorak (1988) proposed a framework taking into consideration communications functions and quality criteria definitions. They defined seven communications functions experienced or performed by customers: (1) technical sales and planning, (2) provisioning, (3) technical quality, (4) billing, (5) network and service management by the customer, (6) repair, and (7) technical support. They also defined seven quality criteria: (1) speed — how quickly communication functions are implemented; (2) accuracy — the correctness or fidelity of communication functions; (3) availability — accessibility of a communication function; (4) reliability — dependability or sustainability of a communication function; (5) security — confidentiality of customer information and protection against fraudulent charges; (6) simplicity — ease of understanding or performing a communication function; and (7) flexibility — the ability to adapt or customize a function to meet individual needs.

In most empirical research on customer satisfaction in the telecommunications industry, network quality as a dimension is incorporated with limited supporting background theory. Huan, Xu, and Li (2005) introduce network quality as one dimension of their service quality construct, considering only network coverage and transmission quality. Wang, Lo, and Yang (2004) include network quality with just two items — overall perceived quality and call quality. Gerpott, Rams, and Schindler (2001), studying the German mobile cellular market, and William and Anuchit (2002), studying the Thai market, exclude the network quality dimension entirely. This study addresses that gap by using a nine-item, five-dimension network quality instrument.

Buehler, Dewenter, and Haucap (2006) examine the causes and effects of mobile number portability (MNP), providing a survey of its implementation in Europe. They argue that a price cap regime starting from the average cost of porting is likely to provide appropriate incentives, and review recent experience with implementing MNP across European markets.

Customer loyalty is often included in service quality and customer satisfaction models as an outcome variable because loyalty more directly reflects the effect of service quality and customer satisfaction than financial results, which can be influenced by many other factors (Bowen & Chen, 2001; Ray, Barney, & Muhanna, 2004). Research data substantiate a positive relationship between customer loyalty and profitability (Anderson, Fornell, & Lehmann, 1994; Lee & Cunningham, 2001). It has been reported that when a company retains just 5% more of its customers, profits increase by 25% to 125%. Loyal customers are less likely to switch due to price and make more purchases than comparable non-loyal customers (Reichheld & Sasser, 1990). Increased profit from loyalty comes from reduced marketing costs, increased sales, and reduced operational costs (Bowen & Chen, 2001). In the current intensely competitive landscape, customer loyalty can serve as a benchmark for sustainable competitive advantage for a service firm (Boulding, Kalra, Staelin, & Zeithaml, 1993; Jones & Sasser, 1995).

Customer loyalty has been defined in various ways: as the feeling of attachment to or affection for a firm's people, products, or services (Jones & Sasser, 1995); as a specific attitude to continue an exchange relationship based on past experience (Czepiel, 1990); and as the customer's intention to re-patronize their current service provider based on past experiences and future expectations (Lee & Cunningham, 2001). The three approaches to defining customer loyalty are behavioral, attitudinal, and composite measurement (Bowen & Chen, 2001). Behavioral measurements treat consistent, repetitious purchase behavior as an indicator of loyalty. Attitudinal measurements use attitudinal data to reflect emotional and psychological attachment. Neither approach alone is fully satisfactory — repeat purchases may reflect convenience rather than loyalty, while a favorable attitude toward a brand does not guarantee actual usage. The composite measurement approach, combining behavioral and attitudinal dimensions and measuring loyalty through product preferences, brand-switching propensity, frequency and recency of purchase, and total purchase amount, provides greater predictive power (Pritchard & Howard, 1997).

Ray, Barney, and Muhanna (2004) challenged the use of perceived firm performance as a dependent variable, arguing that the effectiveness of business processes may be a more appropriate measure. Their study of North American insurance companies found that distinctive advantages observable at the process level are not necessarily reflected in firm-level performance, and that simply examining the relationship between a firm's resources and capabilities and its perceived performance can lead to misleading conclusions regarding resource-based theory.

Conclusion of Literature Review: The literature reveals that firms use two main competitive strategies — cost advantage and differentiation advantage — as key instruments for sustainable success. Advantages arising from a firm's resources stem not from the resources themselves but from the coordination and cooperation through which they are deployed. Customer satisfaction, which varies across industries and service settings, is a cost-effective means of guaranteeing shareholder value growth, productivity through quality commitment, and returns on investment. The telecommunications industry presents a particularly relevant context for studying customer satisfaction, as service quality, network quality, and customer loyalty are all commercially significant and measurable.