maybe coinbase can do that, but the others similar to blockchain.info I have very much doubt that they ask a license because most of them don't even have a physical office at least, even if it was the smallest office in the world it would be something for people to think about: "if they steal money from me i know where to find them so i have 70% confidence in them"... but they don't even have this smallest physical office in the world
If binance, which is a large exchange, does not have a physical office and its headquarters is not known where the hell it is, I imagine that others will not strive to obtain a license
that day all news channels are going to make a lot of money with headlines about this event and the cryptocurrency critics will jump for joy and will be on all TV channels saying things like: "I warn you that you should not trust cryptocurrencies"