Bank as a supplier of fiat currency (the product of a country's pride). The bank will forever remain and it cannot be demolished by anyone, as long as the country that protects it still exists, and the bank will still get a number of benefits from the transaction fees, which we spend, especially when we exchange cryptocurrency into fiat/conventional currencies, or when we buy cryptocurrency.
It is just one number ommited from someones account and goes back to someone elses account. I wouldn't be shocked if countries decide to create their own currency and create a crypto currency that will be basically doing the same thing as the fiat currency they are using right now.