Planned Obsolescence and the R&D Decision
论文研究垄断企业在销售而非出租产品时，其研发决策会倾向于计划性报废，即选择当前利润最大化的研发方向，但这会损害整体盈利能力。
By investing in RD i.e., the R&D choice that maximizes current profitability does not maximize overall profitability. The result is that if output is sold rather than rented, then in its R&D decision the monopolist has an incentive to practice a type of planned obsolescence that lowers its own profitability.