Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

Tuesday, January 4, 2011

Competition of E-Commerce Intermediaries

Posted by D. Daniel Sokol

Alexander Matros (University of South Carolina) and Andriy Zapechelnyuk (Queen Mary, University of London) discuss Competition of E-Commerce Intermediaries.

ABSTRACT: In e-commerce, where information collection is essentially costless and geographic location of traders matters very little, fierce competition between providers of similar services is expected. We consider a model where two e-commerce intermediaries (internet shops) compete for sellers. We show that two non-identical shops may coexist in equilibrium if the population of sellers is sufficiently differentiated in their time preferences. In such an equilibrium less patient sellers choose the more popular (with a higher rate of arrival of new buyers) and more expensive shop, while more patient sellers prefer the less popular and cheaper one.

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