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First-Degree Discrimination by a Duopoly: Pricing and Quality Choice

  • Encaoua David

    ()

    (Université de Paris 1)

  • Hollander Abraham

    ()

    (Université de Montréal)

The paper examines under what conditions vertically differentiated duopolists engage in first-degree price discrimination. Each firm decides on a pricing regime at a first stage and sets prices at a second stage. The paper shows that when unit cost is an increasing and convex function of quality, the discriminatory regime is the unique subgame-perfect equilibrium of such two-stage game. In contrast to the case of horizontal differentiation, the discriminatory equilibrium is not necessarily Pareto-dominated by a bilateral commitment to uniform pricing. Also, the quality choices of perfectly discriminating duopolists are welfare maximizing. The paper explains why a threat of entry may elicit price discrimination by an incumbent monopolist.

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Article provided by De Gruyter in its journal The B.E. Journal of Theoretical Economics.

Volume (Year): 7 (2007)
Issue (Month): 1 (May)
Pages: 1-21

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Handle: RePEc:bpj:bejtec:v:7:y:2007:i:1:n:14
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