Banks will stay an never die. But in the future, bank will look very different from today. Because they need to do something to gain more trust from their consumers. It's good if banks will accept crypto currency because we all know that not all 100% population all over the world are already in crypto and mostly they are still using banks. We can't deny he fact that we still need banks even we prefer crypto over it. As long as government is there, bank will never die.