Evolution of market shares with repeated purchases and heterogeneous network externalities |
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Authors: | Maarten C. W. Janssen Ewa Mendys-Kamphorst |
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Affiliation: | (1) Erasmus University Rotterdam, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands;(2) Erasmus Competition and Regulation Institute, SEOR, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands |
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Abstract: | We investigate how market shares change when a new, superior technology exhibiting network externalities is introduced in a market initially dominated by an old technology. This is done under the assumption that consumers are heterogeneous in their valuation of technology quality and network externalities and that goods are not (perfectly) durable and thus have to be bought repeatedly. When both technologies are unsponsored, the old technology dominates when the quality difference is small, and it disappears when the quality difference is large. When the new technology is sponsored, the relationship between the quality difference and the long-run market share of the new technology is non-monotonic and the old technology always continues to exist. |
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Keywords: | Technology adoption Network externalities Market share dynamics |
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