Im not sure that banks really think so. Sure, they will use blockchain technologies but not a bitcoin itself
Again this blockchain not bitcoin FUD. I see that mainstream media did a good job brainwashing some of you by repeating that phrase over and over. In a way it's also the work of institutions themselves who heard about blockchain tech and not knowing what it is decided to go public with a decision about conducting blockchain research or appointing someone a blockchain specialist.
None of them know how to use blockchain without bitcoin. They only talk about it because it makes them look smart and allows them to explain additional expenses. The only coin they'll ever use is if they make their own centralized coin, like Libra and push it through all the commissions.