Many banks will have to lose due to Bitcoin. Sooner or later Banks will no longer be used for transfers but rather to just get loans, maybe not even this since all the money will be gone into the crypto market.
I don't think that's going to happen at all, and I don't think any bank views crypto as a threat. I think that's a fairly naive view amongst crypto diehards.
Banks will figure out a way to co-opt crypto to make money from it--these banks like Bank of America have been in business for decades, and they employ the best minds in finance. You think something like bitcoin is a threat to them? Highly unlikely in my opinion.
They'll figure out a way to profit from it,
and probably a way to fuck it all up. Mark my words.