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Opportunism in Vertical Contracting: A Dynamic Perspective

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  • Jihwan Do
  • Jeanine Miklós‐Thal

Abstract

This article proposes a dynamic approach to modeling opportunism in bilateral vertical contracting between an upstream monopolist and competing downstream firms. Unlike previous literature on opportunism which has focused on games in which the upstream firm makes simultaneous secret offers to the downstream firms, we model opportunism as a consequence of asynchronous recontracting in an infinite‐horizon continuous‐time model. We find that the degree of opportunism depends on the absolute and relative reaction speeds of the different bilateral upstream–downstream firm pairs and on the firms' discount rate. Patience, fast reaction speeds, and asymmetries in reaction speeds across upstream–downstream pairs are shown to alleviate opportunism. Our results are relevant for vertical merger policy and for competition policy on vertical restraints.

Suggested Citation

  • Jihwan Do & Jeanine Miklós‐Thal, 2025. "Opportunism in Vertical Contracting: A Dynamic Perspective," RAND Journal of Economics, RAND Corporation, vol. 56(4), pages 708-737, December.
    • Handle: RePEc:bla:randje:v:56:y:2025:i:4:p:708-737
    DOI: 10.1111/1756-2171.70023
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