Monopoly incentives for cost-reducing R&D
It is shown in this paper that there exist cost innovations for which a monopolist has a higher incentive to invest than a social planner. This unveils the limits of the claim, based on Arrow (1959), that a monopoly always has a lower incentive to innovate than a social planner and therefore than is socially desirable. In contrast to previous results, the comparison of incentives may also depend upon the demand function. Finally, for a restricted domain of analysis, a rule for comparing the monopoly and the social planner incentives is derived.
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