Bank used traditional money which is highly regulated by the government, it's I think it is irrelevant if the bank accepts Bitcoin which is unregulated because of its decentralized nature.  If you want the same services offered like a bank which is also centralized and purely accepts crypto, we have a lot of custodial wallets/exchanges that are regulated with governments too (depending on which country you are).

If you're a developer that related to crypto which is I have doubt that you understand decentralized, just be your own bank, have your own non-custodial wallet, and don't forget the golden rule of cryptocurrency.  "Not your key, not your coin ", so I think bank services aren't needed if you're in crypto especially in Bitcoin.