It's very strange that Bitcoin, a currency that many people thought would reshape the financial institutes, people want it to become a part of the banking system. A currency, that's designed to make you your own bank, now people want it to become a part of the bank. That's strange, that's really strange.
There are many Bitcoin exchanges, PayPal also accepts Bitcoin. What you say OP, is inevitable, that will definitely happen soon but that's not a good thing. Now the USA might even ban self-custody wallets, that will motivate banks to let you accept crypto transactions through their system.