Realistic scenario/theory; banks try to cut down on future competition by making doing business impossible for exchanges, and then they themselves will launch 'fully legalized' exchanges to take over there where regular exchanges are no longer able to seek for banking services. It's definitely a nasty practice, but a very effective way to for banks tho prevent regular exchanges from fully utilizing their first mover advantage.

Banks have never been shy of these nasty practices, all to eliminate competitors with iron fist, and I am quite sure that my theory will be very close to the reality at some later point in the future. At that point you'll also see how they enable people to miraculously buy crypto with credit again. It's money they are after, money that they think belongs to them, greedy bastards that they are. One answer to this, and one word; DEX.