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.
Great comment, banks wouldn't be where they are if they don't have ability to adapt to new circumstances. They have money and they can change themselves in order to continue to make profit with their huge capital. Of course some bank can fail if management is bad.
Banks aren't the only ones who needs to change in order to adapt to new technologies, it's the task that waits many companies. I believe it's all in peoples minds, the ones who are ready for the changes they will be just finez the ones who aren't with sink in the past. Nothing new, that's happened many times in the past.