摘要：My central thesis is that regulation may be insightfully classified into three broad types of response to perceived market failure, and I will merely touch examples of each. The first is protection of competitive results. I shall focus on natural monopoly regulation, although anti-trust would do as well. The second is protection from competitive results, such as entry control and setting of minimum prices. The third is regulation of externalities such as pollution and accidents arising as byproducts of more usual production.
