Abstract
AbstractThis article investigates the implications of observational learning for firm dynamics. Because consumers learn through past purchase decisions, monopolistic firms can induce information cascades through prices. We characterize when cascades arise and argue that the fragile nature of cascades is reflected in firm‐level data. We measure fragility using reversals: periods when a firm with historically stable revenues experiences a large, sudden change in earnings. We document a robust pattern that the frequency of reversals among stable firms declines with age, and show a calibration exercise delivers an untargeted age profile in line with the data. Finally, efficiency is discussed.
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