Heterogeneity under Competition
A standard prediction of neoclassical microeconomics is that with perfect competition, free entry, and atomistic firms producing a homogeneous product, equilibrium finds all firms employing that technology that has minimum average cost. That competition drives out inefficient producers and reduces heterogeneity within industries is, consequently, a commonplace rule of thumb in economic thinking. This paper demonstrates that demand uncertainty is sufficient to produce heterogeneity in the equilibrium employment of production technologies and to permit the coexistence of producers exhibiting different minimum average costs. This heterogeneity is ubiquitous because the conditions for its presence are not stringent. Copyright 1991 by Oxford University Press.
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Volume (Year): 29 (1991)
Issue (Month): 4 (October)
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