I think it&#x27;s more cost effective to start a new bank.<p>But why would they. It&#x27;s a lot of trouble, and being a bank gives you the right to lend in money from the public.<p>It&#x27;s still possible to provide payment services without being a bank.<p>I think they could more or less buy VISA and pay in cash, and that makes more sense if you want to make money on retail payments.