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.

That was acutely tied up in consequences for politicians and regulators - and as Flint is showing the one thing political turkeys don't vote for is Christmas jailtime for themselves. The Federal Government actively encouraged the mortgage crash through encouraging uneconomical home ownership and destroying banking regulation.

"Big water" is not the banking industry, the disparity between regulator and regulated is much less likely to occur and the opportunities for mega profits with which to bribe politicians, and allow them to bribe us with the resultant tax take, simply aren't there.