# Network Tower Sharing Analysis in Greece: A Structure-Conduct-Performance Approach
## 2 Literature Review  
The Structure-Conduct-Performance paradigm has played a pivotal role in analyzing several ICT-related industries, often characterized by increased technology and commercial innovation, such as the telecommunications industry. Following the convergence of ICT with the telecommunications industry and content media market, the existing research analysis has been carried out, following an extended SCP model, expecting to bring added value to the current paper. [PERSON] and [PERSON] [10] employed the SCP methodology to conduct a political economy analysis of telecommunications policy, focusing on stakeholders' policy objectives in Malaysia and Singapore. The key findings revealed that, despite notable differences in market structure, as well as on the goals of stakeholders (conduct), both countries demonstrated similar industry performance in their adoption of new telecommunications technologies, positioning them as \"fast followers\". In addition, [PERSON] [11] studied the media market, also employing the SCP paradigm. In particular, he analyzed the content media market following the SCP rationale, coming to the conclusion that SCP is an effective tool for interpreting a market where ethical expectations interrelate strongly with commercial needs. Key findings specify that market structure decides the diversity of products and services provided (media diversity), developing a framework of market dynamics determining the variety produced in a content media market (conduct). An extension of this study also revealed how OTT (over-the-top) market structure is analyzed, influencing in turn market conduct and market performance [12]. Key findings revealed that OTT is a highly concentrated and oligopoly market, where competition and cooperation exist alongside in regard to business conduct for all stakeholders involved, such as license owners, content providers, internet companies, and manufacturers of smart TVs. Moreover, strategies employed focus on the increase in efficiency in terms of resource allocation and economies of scale, affecting performance, too. In the case of the Saudi Arabian telecommunications industry, the different phases of market liberalization were analyzed by [PERSON] et al. [13], following the SCP paradigm, too. According to this study, four distinct customer-based service performance outcomes were indicated and tested, i.e., (1) customer satisfaction, (2) customer attitudes, (3) customer loyalty, and (4) service quality perceptions, during different liberalization phases. Research revealed that changes in market structure in the early liberation phase (including the appearance of a new entrant), had a positive impact on all four performance outcomes increasing values; however, in the case of a later stage (including the appearance of a second entrant), the service performance-outcomes were influenced negatively, reducing values, respectively. In addition, the Philippines telecommunications industry was also analyzed by [PERSON] et al. under the SCP model [14]. It should be noted that the telecommunications industry in the Philippines is characterized by increased concentration, accompanied by noteworthy entry barriers (e.g., capital requirements and subscriber base and brand image). Research revealed that an incumbent's conducts are also able to have a notable effect on market structure, in relation to technology innovation, pricing, and bundled products offered to subscribers, while both market structure and conduct have a significant impact on the industry's performance. Focusing on infrastructure sharing in telecommunications, [PERSON] et al. in [15] analyzed infrastructure sharing in the core and radio access networks among multiple operators as a means of market conduct for mobile network operators (MNOs). Infrastructure sharing is considered a topic of high importance, and strategic options alongside the technological solutions available, as well as financial and regulatory issues, are addressed.