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Market Definition in Two-Sided Markets: Theory and Practice

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  • Lapo Filistrucchi

    () (DISEI, UniversitĂ  degli studi di Firenze)

  • Damien Geradin
  • Eric van Damme
  • Pauline Affeldt

Abstract

Drawing from the economics of two-sided markets, we provide suggestions for the definition of the relevant market in cases involving two-sided platforms, such as media outlets, online intermediaries, payment cards companies and auction houses. We also discuss when a one-sided approach may be harmless and when instead it can potentially lead to a wrong decision. We then show that the current practice of market definition in two-sided markets is only in part consistent with the above suggestions. Divergence between our suggestions and practice is due to the failure to fully incorporate the lessons from the economic theory of two-sided markets, to the desire to be consistent with previous practice and to the higher data requirements and the higher complexity of empirical analysis in cases involving two-sided platforms. In particular, competition authorities have failed to recognize the crucial difference between two-sided transaction and non-transaction markets and have been misled by the traditional argument that where there is no price, there is no market.

Suggested Citation

  • Lapo Filistrucchi & Damien Geradin & Eric van Damme & Pauline Affeldt, 2013. "Market Definition in Two-Sided Markets: Theory and Practice," Working Papers - Economics wp2013_05.rdf, Universita' degli Studi di Firenze, Dipartimento di Scienze per l'Economia e l'Impresa.
  • Handle: RePEc:frz:wpaper:wp2013_05.rdf
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    File URL: http://www.disei.unifi.it/upload/sub/pubblicazioni/repec/pdf/wp05_2013.pdf
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    References listed on IDEAS

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    1. Elena Argentesi & Lapo Filistrucchi, 2007. "Estimating market power in a two-sided market: The case of newspapers," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(7), pages 1247-1266.
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    Cited by:

    1. Lapo Filistrucchi & Tobias J. Klein & Thomas O. Michielsen, 2012. "Assessing Unilateral Merger Effects In A Two-Sided Market: An Application To The Dutch Daily Newspaper Market," Journal of Competition Law and Economics, Oxford University Press, vol. 8(2), pages 297-329.
    2. Balmer, Roberto, 2013. "Entry and Competition in Local Newspaper Retail Markets - When two are enough," MPRA Paper 54079, University Library of Munich, Germany.
    3. Lapo Filistrucchi & Damien Geradin & Eric van Damme, 2012. "Identifying Two-Sided Markets," Working Papers - Economics wp2012_01.rdf, Universita' degli Studi di Firenze, Dipartimento di Scienze per l'Economia e l'Impresa.
    4. Budzinski, Oliver, 2016. "Aktuelle Herausforderungen der Wettbewerbspolitik durch Marktplätze im Internet," Ilmenau Economics Discussion Papers 103, Ilmenau University of Technology, Institute of Economics.

    More about this item

    Keywords

    two-sided markets; two-sided platforms; market definition; SSNIP test; Hypothetical Monopolist test;

    JEL classification:

    • L40 - Industrial Organization - - Antitrust Issues and Policies - - - General
    • L50 - Industrial Organization - - Regulation and Industrial Policy - - - General
    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law

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