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Buyer Group and Buyer Power When Sellers Compete

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  • Jeon, Doh-Shin
  • Menicucci, Domenico

Abstract

We study how the formation of a buyer group affects buyer power when sellers compete and buyers operate in separate markets. Previous research (Inderst and Shaffer, 2007, and Dana, 2012) has considered a buyer group that can commit to an exclusive purchase and has found that the formation of a buyer group strictly increases buyer power unless buyers have identical preferences. In contrast, we assume that no commitment to exclusive purchases is possible. We find that the formation of a buyer group has no effect if each seller's cost function is concave. If it is strictly convex, the buyer group strictly reduces the buyers'total payoff as long as the Pareto-dominant equilibrium for sellers is played when a buyer group is formed.

Suggested Citation

  • Jeon, Doh-Shin & Menicucci, Domenico, 2014. "Buyer Group and Buyer Power When Sellers Compete," TSE Working Papers 14-543, Toulouse School of Economics (TSE), revised Nov 2017.
  • Handle: RePEc:tse:wpaper:28819
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    More about this item

    Keywords

    Buyer Group; Buyer Power; Competition in Non-linear Tariffs; Discriminatory Offers; Common Agency;
    All these keywords.

    JEL classification:

    • D4 - Microeconomics - - Market Structure, Pricing, and Design
    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • L82 - Industrial Organization - - Industry Studies: Services - - - Entertainment; Media

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