Adams, William James - In: Journal of Economic Perspectives 20 (2006) 1, pp. 189-205
Between 1950 and 2000, the four-firm producer-concentration ratio for beer increased from 22 to 95 in the United States; and Anheuser-Busch's share of domestic output ballooned from 6 to 54 percent. In Germany, concentration has risen, but it remains low. In 2000, the four-firm...