I think most banks realise its potential but wouldnt want to admit it publically.
My thought exactly. In the dark they are trying to figure out how they can profit from it, and they will in the end.
Did Blockbuster profited from the Internet?
Blockbuster wasn't an industry. They were one company within the broad industry of delivering premium content to people. Netflix and others emerged to leverage the internet. Blockbuster failed to adapt and went under. Banks that don't adapt to future innovations (not just to bicoin) will also go under. But the industry of banking, in some form or another, making money off other peoples' needs to use money and to keep money secure, will be around for a long time.
I think I still owe them some late fees. It always surprises me when I see video rental stores still in business.