Distance Decreases with Differentiation: Strategic Agglomeration by Retailers
33 Pages Posted: 2 Dec 2008 Last revised: 9 Jan 2009
Date Written: January 7, 2009
Theory predicts intense price competition when firms cluster with rivals. Yet, strong evidence of clustering is found in previous empirical research. Researchers typically measure clustering by comparing observed location patterns to random assignment. The random assignment benchmark does not, however, account for zoning and geography and therefore might overstate the extent of strategic agglomeration. As evidence, we find that public elementary schools cluster more than random, not because of agglomeration economies, but due to demand density and limited location options. We argue that a better measurement of strategic agglomeration is to compare across product markets with similar zoning and other location restrictions but different benefits from agglomeration. We use L-function analysis of five product markets in five cities. We find that retailers with greater ability to differentiate their products are more likely to strategically cluster.
Keywords: agglomeration, location, differentiation, retail, alcohol
JEL Classification: L10, L81, R12, R30
Suggested Citation: Suggested Citation