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Estimating network effects in the mobile telecommunications industry in Germany

Author

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  • L. Grzybowski

    (SES - Département Sciences économiques et sociales - LTCI - Laboratoire Traitement et Communication de l'Information - Télécom ParisTech - IMT - Institut Mines-Télécom [Paris] - CNRS - Centre National de la Recherche Scientifique)

Abstract

In this paper we analyze the demand for mobile telecommunication services in Germany in the period from January 1998 to June 2003. During this time, the subscriber base grew exponentially by about 700% while prices declined only moderately by about 41%. We believe that prices alone cannot account for such rapid diffusion and network effects have influenced the evolution of the industry. We put this view to the test by using publicly available data on subscriptions, price indices and churn rates. Using churn rates gave us approximate sales levels which enabled us to use standard methods to investigate the effect of network size on demands. Our estimates of a system of demand functions show that network effects played a significant role in the diffusion of mobile services in Germany.

Suggested Citation

  • L. Grzybowski, 2007. "Estimating network effects in the mobile telecommunications industry in Germany," Post-Print hal-02286631, HAL.
    • Handle: RePEc:hal:journl:hal-02286631
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    Citations

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    Cited by:

    1. Grzybowski, Lukasz, 2015. "The role of network effects and consumer heterogeneity in the adoption of mobile phones: Evidence from South Africa," Telecommunications Policy, Elsevier, vol. 39(11), pages 933-943.
    2. Sergei Sidorov & Alexey Faizliev & Vladimir Balash & Olga Balash & Maria Krylova & Aleksandr Fomenko, 2021. "Extended innovation diffusion models and their empirical performance on real propagation data," Journal of Marketing Analytics, Palgrave Macmillan, vol. 9(2), pages 99-110, June.
    3. Grajek, Michal & Kretschmer, Tobias, 2009. "Usage and diffusion of cellular telephony, 1998-2004," International Journal of Industrial Organization, Elsevier, vol. 27(2), pages 238-249, March.
    4. Aguilar, Diego & Agüero, Aileen & Barrantes, Roxana, 2020. "Network effects in mobile telecommunications markets: A comparative analysis of consumers' preferences in five Latin American countries," Telecommunications Policy, Elsevier, vol. 44(5).
    5. Daniel Birke, 2009. "The Economics Of Networks: A Survey Of The Empirical Literature," Journal of Economic Surveys, Wiley Blackwell, vol. 23(4), pages 762-793, September.
    6. Andreea Cosnita‐Langlais & Alexander Rasch, 2023. "Horizontal mergers, cost savings, and network effects," Bulletin of Economic Research, Wiley Blackwell, vol. 75(1), pages 65-82, January.
    7. Thornton Matheson & Patrick Petit, 2021. "Taxing telecommunications in developing countries," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 28(1), pages 248-280, February.
    8. Latimaha, Rusli & Bahari, Zakaria, 2016. "Elasticity of Demand for Cellular Phone Network Access in Malaysia," Jurnal Ekonomi Malaysia, Faculty of Economics and Business, Universiti Kebangsaan Malaysia, vol. 50(2), pages 125-132.
    9. Bölcskei, Vanda, 2010. "A távbeszélő-szolgáltatások keresleti modelljeinek áttekintése - különös tekintettel a vezetékes és mobilszolgáltatások közötti helyettesítés becslésére [A review of the demand models of telephone ," Közgazdasági Szemle (Economic Review - monthly of the Hungarian Academy of Sciences), Közgazdasági Szemle Alapítvány (Economic Review Foundation), vol. 0(6), pages 517-535.

    More about this item

    Keywords

    L13; L96;

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L96 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Telecommunications

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