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Oligopoly, Endogenous Monopolist and Product Quality

  • Gayer Amit

    ()

    (Haifa University)

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    This paper investigates an oligopolistic market with vertical product differentiation, where qualities are represented by a uni-dimensional interval. We examine the Nash equilibrium in the oligopoly game with a finite number of consumers, where each firm uses its technology and can offer a range of quality-price pairs, and firms' profits are determined by the consumers' selection choice. We show that under the standard conditions on consumers' preferences at most one firm with a positive profit can be active in equilibrium. In contrast, we present an example of a duopoly game with a continuum of consumers, in which both firms yield positive profits in an equilibrium. Finally, we analyze in the linear case the question of existence.

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    File URL: http://www.degruyter.com/view/j/bejte.2007.7.1/bejte.2007.7.1.1376/bejte.2007.7.1.1376.xml?format=INT
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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 (August)
    Pages: 1-21

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    Handle: RePEc:bpj:bejtec:v:7:y:2007:i:1:n:31
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