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The Durability of information, market efficiency and the size of firms

Author: Rob, Rafael ; Fishman, A.INSEAD Area: Economics and Political Science Series: Working Paper ; 94/67/EPS Publisher: Fontainebleau : INSEAD, 1994.Language: EnglishDescription: 30 p.Type of document: INSEAD Working Paper Online Access: Click here Abstract: We analyse a search-theoretic framework in which consumers buy the product repeatedly and firm's costs vary over time. We show the cross-sectional correlation profits and firm size, the persistence of profits over time, and the role of consumers' immobility in determining firms' profits. In contrast with previous explanations of these phenomena, which are based on differences in inherent productive efficiencies, firms in our model have the same efficiencies but some firms are more successful ex-post which affects their subsequent (pricing) behavior and enables them to sustain their "privileged" position. In particular, large and more profitable firms raise their prices more moderately when their costs increase
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We analyse a search-theoretic framework in which consumers buy the product repeatedly and firm's costs vary over time. We show the cross-sectional correlation profits and firm size, the persistence of profits over time, and the role of consumers' immobility in determining firms' profits. In contrast with previous explanations of these phenomena, which are based on differences in inherent productive efficiencies, firms in our model have the same efficiencies but some firms are more successful ex-post which affects their subsequent (pricing) behavior and enables them to sustain their "privileged" position. In particular, large and more profitable firms raise their prices more moderately when their costs increase

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