No, I do not believe that. We must admit that what has allowed banks to acquire so much economic power is their ability to understand where capital is, and make the necessary efforts to keep it.
Knowing that banks will never fight against capital, what I see today is a growing interest of banks to incorporate blockchain technologies into their processes, and because of their marked interest in taking over everyone's money, it would not be strange that in the near future we will see banks willing to accept cryptocurrencies to carry out financial transactions.
Yes, it will. As the states legalize cryptocurrency, banks will take steps to include cryptocurrency in the list of services they provide. Of course, the most common will be the services of buying and selling and exchanging cryptocurrency, the rest of the services will be provided depending on the general attitude of the state to it and the desire of banks. However, I do not think that state-owned banks will widely provide other types of cryptocurrency services.