I think the bank will never disappear. They will add more and more pleasure to satisfy as much as possible the interests of people and themselves as it may happen. So can change the name in the future or the other, but still its function - make money for the wishes of others
The population is growing and we want different options so bank will stay, they are the most powerful in the finance industry
so why would we think they will be replace with bitcoin. That is not gonna happen even with the performance of bitcoin now because the users of the
banking industry are so big as they trust the centralization.