Network Effects and Two-Sided Markets
Case Associates; Institute of Economic Affairs; Centre for Regulation and Market Analysis (CRMA)
This paper sets out the basic economics of network effects and two-sided or multi-sided markets as relevant to antitrust and regulation. Network effects, and the related concept of two- (or multi-) sided markets, are playing an increasing role in antitrust/competition law in the communications sector, computer hardware and software, Computer Ticketing Services (CRS), Automated Teller Machines (ATMs) and credit card schemes sectors to name a few; and also in the evaluation of mergers, industry standards, market structure and competitive behaviour. The discussion begins by defining network effects and the way they alter the economics of market structure, competitive behaviour and pricing. The theory is then applied to concerns over the adoption of industry and product standards, mergers in the communications sector, and the pricing of mobile services. This is followed by an introduction to the theory of two-sided markets. This covers situations where network effects affect consumers in different groups or sides of the market brought together by a third party, such as credit card schemes. The theory of two-sided markets is developed and then applied to some features of credit card schemes. This paper is a module for the Kings College, University of London Postgraduate Diploma/Masters in Economics in Competition Law, 2006/2007.
Number of Pages in PDF File: 57
Keywords: network effects, two-sided markets, multisided markets, credit cards
JEL Classification: L10, L41, L44, L52
Date posted: July 29, 2007
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