Platform Competition for Advertisers and Users in Media Markets
WHU - Otto Beisheim School of Management; CESifo (Center for Economic Studies and Ifo Institute for Economic Research)
May 29, 2011
This paper analyzes a two-sided market model in which platforms compete for advertisers and users. Platforms are differentiated from the users' perspective but are homogenous for advertisers. We show that, although there is Bertrand competition for advertisers, platforms obtain positive margins in the advertising market. In addition, platforms' profits can increase in the users' nuisance costs of advertising. As a general insight, we obtain that factors affecting competition in the user market in a well-known direction without externalities now have opposing effects due to competition in the advertiser market. The model can also explain why private TV platforms benefit if their public rivals are regulated to advertise less - a result at odds with models in which there is no competition for advertisers.
Number of Pages in PDF File: 40
Keywords: Platform Competition, Two-Sided Markets, Advertising, Indirect Externalities, User Charge
JEL Classification: D43, L13, L82working papers series
Date posted: May 30, 2011 ; Last revised: September 9, 2011
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