if they really do the job well and are in accordance with the plan and can be accepted by the crypto currency holders then they will be very developed like the FIAT currency bank. can even develop faster.
I don't like the idea of having a crypto bank.
I mean if you own a cryptocurrency, you are the bank of your own money. You don't need a company, a third party to take care of your bank for you. If you can invest in good cryptocurrencies, you should be able to take care of it as an investor. There are also a lot of things you can do to take care of your investments or your cryptocurrencies, you can just do it on your own.
That's true, if there is a bitcoin bank, it will defeat the purpose of crypto which is doing banking even without bank.