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Market Share Dynamics in a Duopoly Model with Word-of-Mouth Communication

  • Kováč, Eugen
  • Schmidt, Robert C.

We analyze dynamic price competition in a homogeneous goods duopoly, where consumers exchange information via word-of-mouth communication. A fraction of consumers, who do not learn any new information, remain locked-in at their previous supplier in each period. We analyze Markov perfect equilibria in which firms use mixed pricing strategies. Market share dynamics are driven by the endogenous price dispersion. Depending on the parameters, we obtain different 'classes' of dynamics. When firms are impatient, there is a tendency towards equal market shares. When firms are patient, there are extended intervals of market dominance, interrupted by sudden changes in the leadership position.

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Paper provided by Verein für Socialpolitik / German Economic Association in its series Annual Conference 2013 (Duesseldorf): Competition Policy and Regulation in a Global Economic Order with number 79994.

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Date of creation: 2013
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Handle: RePEc:zbw:vfsc13:79994
Contact details of provider: Web page: http://www.socialpolitik.org/
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