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Spillovers, disclosure lags, and incentives to innovate. Do oligopolies over-invest in R&D? Author info | Abstract | Publisher info | Download info | Related research | Statistics Gianluca Femminis () (DISCE, Università Cattolica)
Gianmaria Martini () (Università di Bergamo)
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We develop a dynamic duopoly, where firms have to take into account a technological externality, that reduces over time their innovation costs, and an inter-firm spillover, that lowers only the second comer's R&D cost. This spillover exerts its effect after a disclosure lag. We identify three possible equilibria, which are classified, according to the timing of R&D investments, as early, intermediate, and late. The intermediate equilibrium is subgame perfect for a wide parameters range. When the innovation size is large, it implies that the duopolistic market equilibrium involves underinvestment. Hence, even in presence of a moderate degree of inter-firms spillover, the competitive equilibrium calls for public policies aimed at increasing the research activity. When we focus on minor innovations -- the case in which, according to the earlier literature, the market equilibrium underinvests -- our results imply that the policies aimed at stimulating R&D have to be less sizeable than suggested before, despite the presence of an inter-firm spillover.
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Paper provided by Università Cattolica del Sacro Cuore, Dipartimenti e Istituti di Scienze Economiche (DISCE) in its series DISCE - Quaderni dell'Istituto di Teoria Economica e Metodi Quantitativi with number
itemq0744.
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Length: nn pages 39
Date of creation: Jun 2007Date of revision:
Handle: RePEc:ctc:serie6:itemq0744Contact details of provider: Email: Web page: http://www.unicatt.it/Istituti/TeoriaEconomica More information through EDIRC
For technical questions regarding this item, or to correct its listing, contact: (Gianluca Femminis).
Keywords: knowledge spillover ; dynamic oligopoly ; Find related papers by JEL classification: L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices O33 - Economic Development, Technological Change, and Growth - - Technological Change - - - Technological Change: Choices and Consequences; Diffusion Processes
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