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http://ssrn.com/abstract=1146442
 
 

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Consumer Coordination in the Small and in the Large: Implications for Antitrust in Markets with Network Effects


Daniel F. Spulber


Northwestern University - Kellogg School of Management


Journal of Competition Law and Economics, Vol. 4, pp. 1-56, June 2008
Northwestern Law & Econ Research Paper No. 08-16

Abstract:     
Network effects occur in markets when consumers receive mutual benefits from consuming the same good. Markets with network effects that have generated policy concerns particularly include the information and communications technology (ICT) industries. Many economists and legal scholars argue that the presence of network effects creates a form of market failure known as "network externalities" and recommend new forms of antitrust and regulation targeted at particular firms in the communications and information technology industries. The debate over network effects is likely to have major consequences for these industries, with effects comparable to landmark antitrust cases involving IBM, AT&T, and Microsoft. This article provides a comprehensive examination of network effects that addresses the legal, economic, and technological basis for this phenomenon. The article develops a general framework for examining consumer coordination in markets with network effects. The discussion demonstrates that consumers can coordinate their consumption decisions to obtain the benefits of network effects. When there are small numbers of consumers, as Coase argued, low transactions costs allow the formation of informal agreements and formal contracts that are economically efficient. When there are large numbers of consumers, the market offers many mechanisms of spontaneous order in the sense of Hayek. The article refers to Coasian negotiation as "coordination in the small." The article refers to Hayekian spontaneous order as "coordination in the large." The discussion demonstrates that consumer coordination, both in the small and in the large, results in efficient consumption of network goods and adoption of new technologies. Market institutions are fully capable of addressing network effects. Antitrust policy based on correcting market failure due to "network externalities" is likely to impact adversely both competition and innovation. Network effects do not provide a basis for antitrust policy.

Number of Pages in PDF File: 76

Keywords: Network effects, coordination, antitrust

JEL Classification: L1, L4, K21

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Date posted: June 16, 2008 ; Last revised: September 7, 2008

Suggested Citation

Spulber, Daniel F., Consumer Coordination in the Small and in the Large: Implications for Antitrust in Markets with Network Effects. Journal of Competition Law and Economics, Vol. 4, pp. 1-56, June 2008; Northwestern Law & Econ Research Paper No. 08-16. Available at SSRN: http://ssrn.com/abstract=1146442

Contact Information

Daniel F. Spulber (Contact Author)
Northwestern University - Kellogg School of Management ( email )
606 Leverone Hall
2001 Sheridan Road
Evanston, IL 60208
United States
847-491-8675 (Phone)
847-467-1777 (Fax)
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