The chance that the banks will allow and add a crypto service on what they traditionally offering to the people is very low.
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.?
That's an all around service. Maintaining a computer isn't really necessary unless you work for a corporation and if you think of doing something like being the bank for crypto services. This is only good for the starters and that's the target market you're going to have.
Because making a crypto wallet is just easy as it goes.