It doesn't go that far. These are part of the Know Your Customer type of law. These have increasingly been pushed as part of anti money laundering onto banks, investments, and processors. If a company is selling illegal things or things that even could potentially be illegal, then they get blacklisted. Similar thing to pot companies.
Marijuana sales, at least in the US, are a whole different can of worms, because marijuana exists as kind of a Schroedinger's illicit substance: its legal at a state level in most US states, while simultaneously illegal at the federal level. Anyone with a multi-state footprint that exists in that transaction chain could be held liable.
And they have threatened payment processors, etc. basically anyone who gets to big.