Flexibility as an Instrument in DRM Systems

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Citation2005 Workshop on Economics of Information Security, Cambridge MA, June 2005
AuthorsDirk Bergemann
Thomas Eisenbach
Joan Feigenbaum
Scott Shenker


We consider the optimal design of flexible use in a digital-rights-management policy. The basic model considers a single distributor of digital goods and a continuum of consumers. Each consumer can acquire the digital good either as a licensed product or as an unlicensed copy. The availability of (or access to) unlicensed copies is increasing both in the number of licensed copies and in the flexibility accorded to licensed copies. We thus analyze the optimal design of flexibility in the presence of unlicensed distribution channels (the ``greynet''). We augment the basic model by introducing a ``secure platform'' that is required to use the digital good. We compare the optimal design of flexibility in the presence of a platform to the one without a platform. Finally, we analyze the equilibrium provision when platform and content are complementary goods but are distributed and priced by different sellers.

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