Central banks and large institutional banks are researching blockchain solutions for many of the things they do, not for the rebellious crypto reasons but because a distributed ledger with crypto guarantees can actually be a lot simpler to manage than a bunch of mainframe business logic developed decades past.

This would be less for consumers paying for things but the many methods banks use to settle accounts between themselves.

Example: https://www.bloomberg.com/news/articles/2022-05-26/jpmorgan-...