How can bank ban the sale of crypto when they don’t have the power to do so, banks are just into business just like every other business men and women are also into crypto and if the owner of the money says this is how he wants his money, then what right do they have over it, they can only implement government’s policy, maybe government sends circulation that banks should not get involved in any transaction that has to do with crypto.

I don’t think many transactions that we have been doing has nothing to do with banks except maybe all these local exchangers that would have to get fiat to pay who ever request to change cryptocurrency to fiat through them. Banks would only end up shooting themselves in the leg if they fight crypto more than they can.