sentences:  Mutualist Kevin Carson argues that transportation is a natural diseconomy of scale.He says that the cost of transportation increases disproportionately with the size of a firm; he believes that in a free market, there would be strict upper limits to the size and power of corporations, and small businesses would have natural advantages.He continues by arguing that government subsidies to transportation, however, make large, centralized corporations artificially profitable, contributing to corporate dominance of the economy.