Alas, I don't think this is going to happen, because financial accidents are rarely gory so it's tricky to mobilize the masses. If someone gets pounded to pulp by a power hammer, that will get plenty of visceral coverage and politicians will latch on to score easy cookie points for being seen "committing good deeds".

Finance is too abstract for this to work. "Big Bank Co ABC defrauding other institutional clients by XYZ billions" is so far removed from common folk that they can't relate to it. Some politicians will make some token moves, which (as described in another comment of mine) will just end up funneling some money into another special interest group and that's it.