Let's not forget that banking is a government-protected industry. A big recourse that a lot of people have in the normal, private space is to switch to a compet

Let's not forget that banking is a government-protected industry. A big recourse that a lot of people have in the normal, private space is to switch to a competitor. This naturally leads to competitors that try out things that are different to things you don't like. That mechanism is simply not present in the banking industry precisely because it's controlled (regulated/restricted entry) by government.