Incompatibility, Product Attributes and Consumer Welfare: Evidence from ATMs

Christopher Knittel and Victor Stango

The B.E. Journal of Economic Analysis & Policy, 2008, vol. 8, issue 1, 1-42

Abstract: Incompatibility in markets with network effects reduces consumers' ability to "mix and match" components offered by different sellers, but can also spur changes in product attributes that might benefit consumers. In this paper, we estimate the effects of incompatibility on consumers in a classic hardware/software market: ATM cards and machines. We find that ATM fees ceteris paribus reduce the network benefit from other banks' ATMs. However, a surge in ATM deployment accompanies the shift to surcharging. Even under conservative assumptions regarding how much of the surge is directly attributable to surcharging, greater deployment often completely offsets the harm from higher fees. The results suggest that policy discussions of incompatibility must consider not only its direct effect on consumers, but also its effect on product attributes.

Date: 2008
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Related works:
Working Paper: Incompatibility, Product Attributes and Consumer Welfare: Evidence from ATMs (2005)
Working Paper: Incompatibility, Product Attributes and Consumer Welfare: Evidence from ATMs (2005)
Working Paper: Incompatibility, Product Attributes and Consumer Welfare: Evidence from ATMs (2004)
Working Paper: Incompatibility, Product Attributes and Consumer Welfare: Evidence from ATMs (2004)
Working Paper: Incompatibility, Product Attributes and Consumer Welfare: Evidence from ATMs (2004)
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DOI: 10.2202/1935-1682.1731

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