Should banks (through Visa) be allowed to own debit clearing networks? This problem combines the classic Cournot (1838)-Spengler (1950) double marginalization problem with the more recent literature on two-sided markets (Rochet and Tirole, 2003). Because both the double marginalization (Weyl,...

Ride-sharing platforms match riders and drivers by setting two prices. One price is what riders pay, the other is what drivers receive. There is no bargaining process between riders and drivers and there is also no direct transaction between these two sides. Thus, we may think of this market as...