At its core, it would be a matter of having a place that accepts credit cards and a place that distributes it. You would have to have a back end like Paypal or Stripe or some sort of crypto that not everyone has. Also, crypto has to have a place that accepts and distributes, so you would need some kind of exchange. This seems easy on its surface, but I think it would be difficult in the end to take it completely out of the big corporation’s hands.