If they're playing a long-tail game like this, would it make accepting credit card payments more difficult? Maybe that's why they don't handle payment?

I know these Stripe-like APIs advertise that building one integration will allow you to send (to driver) and receive (from rider) money in many different currencies, but I have to believe it would be extremely tough to do. Support overhead alone would be large. Is this accurate?

I also imagine that these more remote communities have more of a cash economy than urban communities, but this is a complete guess.