Well they have been using their imagination to screw people over for hundreds of years now, maybe this time they can dig theirselves out. Infact they will come up with something to rob their clients once more.
Make no mistake, bitcoin is only around because they allow it. This is not related to bitcoin, but I have memory of a certain episode in Portugal's politic life, where a government, made the proposal, that banks would start to pay taxes like normal businesses, the govenour of Banco de Portugal went to see the President, and that was it. One week later that Prime Minister was out, new elections.
Banks rule the world.