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Entry-proofness and discriminatory pricing under adverse selection

Author

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  • Andrea Attar

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, CNRS - Centre National de la Recherche Scientifique)

  • Thomas Mariotti

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, CNRS - Centre National de la Recherche Scientifique)

  • François Salanié

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

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

  • Andrea Attar & Thomas Mariotti & François Salanié, 2021. "Entry-proofness and discriminatory pricing under adverse selection," Post-Print hal-03353054, HAL.
    • Handle: RePEc:hal:journl:hal-03353054
    DOI: 10.1257/aer.20190189
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    Cited by:

    1. Roy McGee, 2023. "Adverse Selection Among Early Adopters and Unraveling Innovation," University of Western Ontario, Centre for Human Capital and Productivity (CHCP) Working Papers 2022302, University of Western Ontario, Centre for Human Capital and Productivity (CHCP).
    2. 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.
    3. 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.
    4. Auster, Sarah & Gottardi, Piero, 2019. "Competing mechanisms in markets for lemons," Theoretical Economics, Econometric Society, vol. 14(3), July.

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    More about this item

    Keywords

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

    JEL classification:

    • D11 - Microeconomics - - Household Behavior - - - Consumer Economics: Theory
    • 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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