So are you suggesting Visa/MC shouldn’t comply with laws & regulation?
Visa/MC aren’t the “bad guys” here. They are just trying to adhere to the required laws & regulations impose on them.
EDIT: I can’t reply to your comment below, so I’m going to reply here.
> If selling adult services or goods is "illegal," then the US law should codify it, not leave it up Visa/MC/processors to decide.
This is where I think you’re confusing matters. Visa/MC aren’t “deciding”. They are simply asking a merchant to prove if unknown activity is NOT illegal.
If the merchant can’t prove its not illegal, then correct - that merchant can’t continue to transact.
But they aren’t deciding. And that’s the big difference.
EDIT2:
> Now, it’s within Visa and MC’s prerogative to operate how they see fit. A government-backed or decentralized network would bring some needed competition.
The merchant doesn’t have to accept those card networks. They could accept cash, check, ACH, bitcoin, bank transfer, PayPal, WePay, Zelle, etc.