Some Economics of Private Digital Currency
This paper reviews some recent developments in digital currency, focusing on platform-sponsored currencies such as Facebook Credits. We develop a model of platform management in which platform currency offers "enhancements" to users who spend time on the platform. Users allocate time between earning money outside of the platform and using the platform. The platform can equip its currency in different attributes and limitations, with the goal of maximizing profit. We show that limiting functionality of currency (e.g., prohibiting transferability) may increase usage on the platform. But depending on the source of the revenue, different attributes of the currency are optimal. We also find that it will not likely be profitable for such currencies to expand to become fully functional competitors to state-issued currencies. However, it is still possible, in some cases for limited platform-sponsored currencies to be attractive outside of the platform.
The views here are those of the authors and no responsibility for them should be attributed to the Bank of Canada. We thank participants at the NBER Economics of Digitization Conference, Warren Weber and Glen Weyl for helpful comments on an earlier draft of this paper. Please send any comments to email@example.com.
Joshua S. Gans
During the course of this research I worked at Microsoft Research. Microsoft has a broad interest in intellectual property matters but this paper was independent of any work done for them.
Funding from the Sloan Foundation is acknowledged for other research.