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Review of Economic Studies Vol. 88 No. 2 2021

The Effects of Competition and Entry in Multi-sided Markets

Guofu Tan1; Junjie Zhou2

1 Department of Economics, University of Southern California , · 2 Department of Economics, National University of Singapore

Abstract

We study price competition and entry of platforms in multi-sided markets. Utilizing the simplicity of the equilibrium pricing formula in our setting with heterogeneity of customers’ membership benefits, we demonstrate that in the presence of externalities, the standard effects of competition can be reversed: as platform competition increases, prices, and platform profits can go up and consumer surplus can go down. We identify economic forces that jointly determine the social inefficiency of the free-entry equilibrium and provide conditions under which free entry is socially excessive as well as an example in which free entry is socially insufficient.

DOI
10.1093/restud/rdaa036
Volume
88
Issue
2
Pages
1002-1030
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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