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Simulating media platform mergers

Author

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  • Marc Ivaldi

    (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)

  • Jiekai Zhang

    (Hanken School of Economics)

Abstract

The empirical analysis of media platforms economics has often neglected the multi-homing behaviour of advertisers. Assuming away the cross-substitutability and/or complementarity between the advertising slots of different platforms could damage the quality and the robustness of counterfactual analysis. To evaluate the consequence of such an abstraction, we compare the simulation results of hypothetical platform mergers when the demand on the advertising side is derived from a Translog cost model which allows for multi-homing, and when it is approximated by using a simple log-linear inverse demand model that ignores the differentiation among media platforms' advertising slots. Ignoring the existence of substitutes or complements on the advertising side would result in overpredicting the losses of the viewers' surplus and in underpredicting the gains in platforms' revenues

Suggested Citation

  • Marc Ivaldi & Jiekai Zhang, 2021. "Simulating media platform mergers," Post-Print hal-03472984, HAL.
    • Handle: RePEc:hal:journl:hal-03472984
    DOI: 10.1016/j.ijindorg.2021.102729
    Note: View the original document on HAL open archive server: https://hal.science/hal-03472984
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    References listed on IDEAS

    as
    1. Ivaldi, Marc & Zhang, Jiekai, 2020. "Platform Mergers: Lessons from a Case in the Digital TV Market," CEPR Discussion Papers 14895, C.E.P.R. Discussion Papers.
    2. Ying Fan, 2013. "Ownership Consolidation and Product Characteristics: A Study of the US Daily Newspaper Market," American Economic Review, American Economic Association, vol. 103(5), pages 1598-1628, August.
    3. Marc Rysman, 2004. "Competition Between Networks: A Study of the Market for Yellow Pages," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 71(2), pages 483-512.
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    Cited by:

    1. Affeldt, P. & Argentesi, E. & Filistrucchi, Lapo, 2021. "Estimating Demand with Multi-Homing in Two-Sided Markets," Other publications TiSEM 1317bf39-d02e-4f61-a34f-e, Tilburg University, School of Economics and Management.

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    More about this item

    Keywords

    Competition policy; TV market; Advertising; Platform merger; Two-sided market;
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