Money transmitters don't have much discretion over their customer list. There are rules (PATRIOT Act AML provisions) that punish their executives with jail time

Money transmitters don't have much discretion over their customer list. There are rules (PATRIOT Act AML provisions) that punish their executives with jail time if they have customers who turn out to be criminals, even if said executives didn't know anything about that at the time. And in some countries like France there are laws saying everyone has a right to a bank account. The courts will force a bank to open an account if someone can't get an account due to de-platforming. It was used by the ex-bitcoin exchange MtGox in the past, I think.