Failure to Launch: Critical Mass in Platform Businesses
David S. Evans
University of Chicago Law School; University College London; Global Economics Group
Massachusetts Institute of Technology (MIT) - Sloan School of Management
September 2, 2010
Platform businesses add value by facilitating interactions between customers who are attracted at least in part by network externalities. Platform businesses with low switching costs have become more important with the rise of the internet. This essay explores the sources of the initial critical mass constraint that new, potentially viable businesses of this sort generally seem to face. For two-sided platforms, we show that this constraint is two-dimensional and depends on the nature of network effects and the distribution of customer tastes. Depending on the dynamics of adjustment to equilibrium, it may pose a chicken-and-egg problem.
Number of Pages in PDF File: 33
Keywords: Platform businesses, two-sided platforms, critical mass
JEL Classification: L1, O3working papers series
Date posted: April 10, 2009 ; Last revised: September 5, 2010
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