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Entry-Proofness and Discriminatory Pricing under Adverse Selection

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  • Attar, Andrea
  • Mariotti, Thomas
  • Salanié, François

Abstract

This paper studies competitive allocations under adverse selection. We rst provide a general necessary and sucient condition for entry on an inactive market to be unprotable. We then use this result to characterize, for an active market, a unique budget-balanced allocation implemented by a market tari making additional trades with an entrant unprotable. Motivated by the recursive structure of this allocation, we nally show that it emerges as the essentially unique equilibrium outcome of a discriminatory ascending auction. These results yield sharp predictions for competitive nonexclusive markets..

Suggested Citation

  • Attar, Andrea & Mariotti, Thomas & Salanié, François, 2017. "Entry-Proofness and Discriminatory Pricing under Adverse Selection," TSE Working Papers 17-788, Toulouse School of Economics (TSE), revised Jan 2021.
    • Handle: RePEc:tse:wpaper:31582
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    Cited by:

    1. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2021. "Competitive Nonlinear Pricing under Adverse Selection," TSE Working Papers 21-1201, Toulouse School of Economics (TSE), revised Aug 2022.
    2. Auster, Sarah & Gottardi, Piero, 2019. "Competing mechanisms in markets for lemons," Theoretical Economics, Econometric Society, vol. 14(3), July.
    3. Philippe De Donder & Marie-Louise Leroux & François Salanié, 2023. "Advantageous selection without moral hazard," Journal of Risk and Uncertainty, Springer, vol. 67(1), pages 21-43, August.

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    More about this item

    Keywords

    Adverse Selection; Entry-Proofness; Discriminatory Pricing; Nonexclusive; Markets; Ascending Auctions.;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law

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