边际私人收益
- 网络marginal private benefit
边际私人收益-
由于技术创新产出的非独占性，创新者不能完全攫取创新的全部收益，从而基于边际私人收益等于边际成本决定的私人最优创新水平必然小于社会最优创新水平。
Because not all of the outputs of innovation belong to enterprises that do innovation , the amount of innovation when marginal private profit equals marginal cost must be less than that when marginal social profit equals marginal cost .