A Welfare Analysis of Barriers to Entry
Volume: Volume 11, No. 2
Issue: Autumn 1980
Pages: pp. 399-420
Authors: C.C. von Weizsäker
Title: A Welfare Analysis of Barriers to Entry
Abstract: It is widely believed that welfare would be improved by encouraging entry in circumstances where "barriers to entry" (in the sense of Bain) exist. Two models are developed herein which demonstrate that this view is incautious. Economies of scale and product differentiation are both held to be barriers to entry in the Bain scheme of analysis. I show that there are plausible parameter configurations for both economies of scale and goodwill (which is a variant of product differentiation) under which welfare would be improved by increasing, rather than decreasing, the protection of incumbents from the competition of entrants. Greater attention to detail in the analysis of industry circumstances and greater caution in reaching "obvious" welfare conclusions are needed.
JEL Classification
Microeconomics Theory of Firm and Industry under Imperfectly Competitive Market Structures (0226)
Market Structure: Industrial Organization and Corporate Strategy (6110)