It takes many years for more efficient electronic payments to be widely used, and the fees thatmerchants (consumers) pay for using those services are increasing (decreasing) over time. Weaddress these puzzles by studying payments system evolution with a dynamic model in a twosidedmarket setting....

This paper examines innovation, deregulation, and firm dynamics over the life cycle of the U.S. ATM and debit card industry. In doing so, we construct a dynamic equilibrium model to study how a major product innovation (introducing the new debit card function) interacted with banking...