I think bank system would modify and implement cryptocurrency in its system like a holders active, and will make money from that.
I also think that banks will start using the cryptocurrency for their own benefit in the future, which will be good for both banks and the cryptocurrency
So many times the bank has stated if they are not interested in used crypto because they have owned fiat as their own currency, but if this will be a big trend in the future and they can't avoid this trend and the trend will be forced them all to join with us. They are only looking for blockchain system to improve their current system.