To Know or Not To Know: Strategic Inattention and Endogenous Market Structure
Quaderni - Working Paper DSE N° 987
27 Pages Posted: 15 Jan 2015 Last revised: 2 Mar 2015
Date Written: January 14, 2015
We model an industry in which a discrete number of firms choose the output of their differentiated products deciding whether or not to consider the impact of their decisions on aggregate output. We show that two threshold numbers of firms exist such that: below the lower one there is a unique equilibrium in which all firms consider their aggregate impact as in standard oligopoly; above the higher threshold there is a unique equilibrium in which all firms disregard that impact as in standard monopolistic competition; between the two thresholds there are two equilibria, one in which all firms consider their aggregate impact and the other in which they do not. We then show that our model of 'strategic inattention' is isomorphic to a model of 'strategic delegation' with managerial compensation based on relative profit performance.
Keywords: information, strategic interaction, monopolistic competition, oligopoly, delegation
JEL Classification: D43, L13
Suggested Citation: Suggested Citation