What interests me is that it makes sense to start a “bank” that will take care of customers like traditional banks do. Opening an account, buying a crypt, maintaining a computer, etc.?
It does not make sense to have a 'crypto bank.'
A bank's core function is to maintain a ledger (a list of who owns what value). BTC is a ledger that was designed to replace this core functionality. In other words: BTC is already a bank.