Jj. Siegfried et al., THE LIMITED ROLE OF MARKET POWER IN GENERATING GREAT FORTUNES IN GREAT-BRITAIN, THE UNITED-STATES, AND AUSTRALIA, Journal of industrial economics, 43(3), 1995, pp. 277-286
Studies of the largest contemporary fortunes in Great Britain, the Uni
ted States, and Australia each find that over two-thirds of the fortun
es originated in competitive industries. A finding that market power i
s responsible for only one-third of the wealth of the wealthiest indiv
iduals is consistent with earlier research. Great fortunes can arise f
rom competitive industries because of risk and uncertainty, infra-marg
inal (Ricardian) rents, and disequilibrium.