Intellectual Property & External Consumption Effects: Generalizations from Pharmaceutical Markets

There is a long-standing literature that recognizes that an efficient solution in correcting a consumption externality is through applying subsidies and taxes that line up private incentives with social ones. An equally long-standing literature tackles the appropriate methods of generating the efficient amount of R&D into goods that only have private consumption effects, e.g. the analysis of the welfare effects of patent regulations. This paper analyzes the joint problem of the optimal provision of R&D and consumption incentives for goods that at the same time undergo technological change and have external consumption effects. For good with external effects, just as is the case for goods with only private effects, ex-post static efficiency may have to be sacrificed for dynamic efficiency. For goods with only private consumption effects, it is well-understood that efficient competition ex-post leads to insufficient R&D incentives ex-ante, which is of course the common rationale for patents. For external effects, this analogy has the important and unrecognized implication that classic interventions to solve externality problems, such as Pigouvian taxes and subsidies, may often be inefficient under technological change. In many cases, arguing for Pigouvian solutions in presence of technological change is analogous to arguing for competitive markets for new inventions (!), as both argue for ex-post efficiency rather than dynamic efficiency. The results are discussed in the context of the pharmaceutical industry which simultaneously is one of the most R&D-intensive industries and one for which consumption of its output often seems to involve external effects, e.g. through human rights-based access issues.

Health Care, Technological Change, and Altruistic Consumption Externalities

Traditional economic analysis has proposed well known remedies to deal with consumption externalities and inefficient technological change in isolation, but lacks a general framework for addressing them jointly. We argue that the joint determination of R&D and consumption externalities is central to health care industries around the world generally, and for the pharmaceutical industry in particular. This is because technological change drives the expansion of the health care sector and altruism seems to motivate many public subsidies such as Medicaid in the US. We stress that standard remedies to the two problems in isolation are inefficient — Pigouvian corrections to consumption externalities are inefficient under technological change and standard R&D stimuli are inefficient because they focus only on consumer and producer surplus, not the altruistic surplus accruing to non-consumers. We provide illustrative calculations of the dynamic inefficiency in the level of US R&D spending due to the inability of innovators to appropriate the altruistic surplus. We find that altruistic gains amount to about a quarter of consumer surplus in the baseline scenario. Our analysis implies that total R&D could be under-provided by as much as 60 percent.