I might be thinking of the wrong thing, but the payment gateways will need to know who the payer is, and the service provider doing the payment will need to ensure the payment isn't fraudulent (or be exposed to chargebacks), which means the service provider in the end needs to validate your ID, or someone in the chain will in any case.
I'm not pretending to know every platform out there and every laws, but I think it's fair to say that accomplishing the things GP said is not simple, and that most service provider will need some form of ID somehow. Even ProtonMail will require you to make a payment or provide your phone number if you try to create an account from Tor.
Know your customer is a banking law that banks have to follow for money laundering purposes