> They have to accept payment in whatever form customers are willing to provide it in. Customers aren't going to move away from PayPal and credit cards without a good reason, and so far crypto has failed to provide that reason.
In general this is just an illustration of the racket between banks and card companies, since customers really only seek to pay using the payment options their bank provides upon opening an account, although I guess that's not a surprise given Visa started out under Bank of America[0].
If banks provided a crypto wallet that had all the benefits of regular accounts like direct deposit and FDIC insurance, which they might eventually do[1], I doubt many would hesitate to use it. The only barrier would be if using the crypto wallet presented a fee that Visa and the rest of the card industry loves to keep a secret by charging the merchant instead, with the merchant passing on those costs to the customer in the form of higher MSRPs.
0: https://minesafetydisclosures.com/blog/2019/5/29/part-l-a-hi...
1: https://www.federalreserve.gov/faqs/what-is-a-central-bank-d...