Antitrust & Competition Policy Blog

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

Monday, March 12, 2018

On the Dilution of Market Power

Sergey Kokovin (National Research University Higher School of Economics); Mathieu Parenti (National Research University Higher School of Economics); Jacques-Francois Thisse (National Research University Higher School of Economics); and Philip Ushchev (National Research University Higher School of Economics) provide thoughts On the Dilution of Market Power.

ABSTRACT: We show that a market involving a handful of large-scale firms and a myriad of small-scale firms may give rise to different types of market structure, ranging from monopoly or oligopoly to monopolistic competition through new types of market structure. In particular, we find conditions under which the free entry and exit of small firms incentivizes big firms to sell their varieties at the monopolistically competitive prices, behaving as if in monopolistic competition. We call this result the dilution of market power. The structure of preferences is the main driver for a specific market structure to emerge as an equilibrium outcome

http://lawprofessors.typepad.com/antitrustprof_blog/2018/03/on-the-dilution-of-market-power-1.html

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