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The importance of consumer multihoming (joint purchases) for market performance: Mergers and entry in media markets

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  • Simon P. Anderson
  • Øystein Foros
  • Hans Jarle Kind

Abstract

Consumer “multihoming” (watching two TV channels, or buying two news magazines) has surprisingly important effects on market equilibrium and performance in (two‐sided) media markets. We show this by introducing consumer multihoming and advertising finance into the classic circle model of product differentiation. When consumers multihome (attend more than one platform), media platforms can charge only incremental value prices to advertisers. Entry or merger leaves consumer prices unchanged under consumer multihoming, but leaves advertiser prices unchanged under single‐homing: Multihoming flips the side of the market on which platforms compete. In contrast to standard circle results, equilibrium product variety can be insufficient under multihoming.

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  • Simon P. Anderson & Øystein Foros & Hans Jarle Kind, 2019. "The importance of consumer multihoming (joint purchases) for market performance: Mergers and entry in media markets," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 28(1), pages 125-137, January.
    • Handle: RePEc:bla:jemstr:v:28:y:2019:i:1:p:125-137
    DOI: 10.1111/jems.12300
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    1. Evensen, Charlotte Bjørnhaug & Haugen, Atle, 2021. "The impact of targeting technologies and consumer multi-homing on digital platform competition," Discussion Paper Series in Economics 13/2021, Norwegian School of Economics, Department of Economics.
    2. Esther Gal-Or & Qiaoni Shi, 2022. "Designing Entry Strategies for Subscription Platforms," Management Science, INFORMS, vol. 68(10), pages 7597-7613, October.
    3. Juan Manuel Sanchez‐Cartas & Gonzalo León, 2021. "Multisided Platforms And Markets: A Survey Of The Theoretical Literature," Journal of Economic Surveys, Wiley Blackwell, vol. 35(2), pages 452-487, April.
    4. Tremblay, Mark J. & Adachi, Takanori & Sato, Susumu, 2023. "Cournot platform competition with mixed-homing," International Journal of Industrial Organization, Elsevier, vol. 91(C).
    5. Jullien, Bruno & Sand-Zantman, Wilfried, 2021. "The Economics of Platforms: A Theory Guide for Competition Policy," Information Economics and Policy, Elsevier, vol. 54(C).
    6. Joao Correia‐da‐Silva & Bruno Jullien & Yassine Lefouili & Joana Pinho, 2019. "Horizontal mergers between multisided platforms: Insights from Cournot competition," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 28(1), pages 109-124, January.
    7. Federico Boffa & Amedeo Piolatto & Evila Piva & Florian Schuett, 2022. "Industry dynamics in digital markets," Economia e Politica Industriale: Journal of Industrial and Business Economics, Springer;Associazione Amici di Economia e Politica Industriale, vol. 49(3), pages 401-407, September.
    8. Singh, Neeraj & Kumar, Niraj & Kapoor, Sanjeev, 2022. "Consumer multihoming predisposition on food platforms: Does gender matter?," Journal of Retailing and Consumer Services, Elsevier, vol. 67(C).
    9. Takanori Adachi & Susumu Sato & Mark J. Tremblay, 2023. "Platform Oligopoly with Endogenous Homing: Implications for Mergers and Free Entry," Journal of Industrial Economics, Wiley Blackwell, vol. 71(4), pages 1203-1232, December.
    10. Feng Zhu & Xinxin Li & Ehsan Valavi & Marco Iansiti, 2021. "Network Interconnectivity and Entry into Platform Markets," Information Systems Research, INFORMS, vol. 32(3), pages 1009-1024, September.
    11. Xingzhen Zhu & Markus Lang & Helmut Dietl, 2022. "Content Quality Assurance on Media Platforms with User-Generated Content," Working Papers 395, University of Zurich, Department of Business Administration (IBW).
    12. Bruno Jullien & Alessandro Pavan & Marc Rysman, 2021. "Two-sided markets, pricing, and network effects," Post-Print hal-03828345, HAL.
    13. Baranes, Edmond & Cortade, Thomas & Cosnita-Langlais, Andreea, 2019. "Horizontal mergers on platform markets: cost savings v. cross-group network effects?," MPRA Paper 97459, University Library of Munich, Germany.
    14. Vartanov, Sergey, 2020. "Производство, Потребление И Медиа: К Постановке Модели Трехстороннего Рынка [Production, consumption and media: towards formulating a three-sided market model]," MPRA Paper 104553, University Library of Munich, Germany.

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