With the system the way it is, the card processors eat a little loss from "fraud", and then use that as a justification to exert editorial control over what industries they want to process payments for, because there's a lot of "fraud" in them. No it's not fraud, it's someone being embarrassed about their spending habits and claiming their card was stolen. If it was harder to steal cards, that would change.

Visa/MC's crusade against legitimization of sex work is a political/religious stance that has absolutely no place in what should be infrastructure. Infrastructure should be neutral.