A bank can use the blockchain internally to make it's processes much cheaper. And it has the consumer trust and insurance that people want that their money/btcs/ctcs are safe no matter what.
That's a joke right??
Wow I consider myself pretty young but you can really tell when someone is young on this forum, consumer trust in a bank. Yeah lets just pretend the whole bank bailout didn't happen and occupy wallstreet was just a small tussle.