Crypto-currency could actually be quite good for banks. They'd love a way around credit cards. Not good for credit card companies, remittance companies, etc. I don't think credit card companies know how to respond, still.
commonwealth bank of australia is looking into ripple
IBM is working with ethereum
http://www.reuters.com/article/2015/09/15/us-banks-blockchain-idUSKCN0RF24M20150915
http://www.coindesk.com/meet-secco-the-uks-blockchain-inspired-challenger-bank/
and many more financial institutions have start-ups in crypto