I don't think payday loan shops are ever constrained by the amount of capital they can loan out, though. If they were, it would be trivial for them to borrow mo

I don't think payday loan shops are ever constrained by the amount of capital they can loan out, though. If they were, it would be trivial for them to borrow money at normal rates (say 10%) from a traditional bank and solve that problem. I'm sure they are much more constrained by the physical locations/marketing/accessibility of customers/etc and no money at 3000+%/year is going to help them solve those constraints.