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Market Definition of Platform Markets

Listed author(s):
  • Dewenter, Ralf

    ()

    (Helmut Schmidt University, Hamburg)

  • Heimeshoff, Ulrich

    ()

    (Düsseldorf Institute for Competition Economics)

  • Löw, Franziska

    ()

    (Helmut Schmidt University, Hamburg)

Platform markets are characterized by the existence of indirect network effects that connect two or more market sides through a platform that internalizes these feedback effects. Conventional instruments of market definitions which consider price levels cannot easily applied in case of two-sided platform competition, as price structure of those markets are non-neutral. Instead of using prices, we use time series of quantities and simple correlation analysis to evaluate the substitutional relationship within two-sided media markets. As a benchmark model, we simulate a Cournot duopoly on order to calculate correlation coefficients for varying degrees of product differentiation and indirect network effects.

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Paper provided by Helmut Schmidt University, Hamburg in its series Working Paper with number 176/2017.

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Length: 48 pages
Date of creation: 14 Mar 2017
Handle: RePEc:ris:vhsuwp:2017_176
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