people already are trying to use all kind of vectors to launder money, including steam
and cryptocurrency systems in general don't do the legal due diligence of a payment processor/bank
so you now have the problem of being partially responsibility to do that legal due diligence yourself and make your service more attractive to be abused as in money laundering schemes
but if things get worse they could consider creating a payment processor sub company, the issue with that is I think there are a lot of way Visa can mess with them in the US and it seems not necessary in the EU (as due to side effects of pushing/forcing banking payment system improvements you technically have a wide choice of alternatives to PayPal or Credit Card payment for only payment, it's just many solutions are niche so most sides don't bother for now (but things are changing))
Crypto is almost as bad as handing over your ID to see "adult" materials, because both require you to trust two parties (government ID stores and the general crypto community) that have shown themselves to not be trustworthy at all.
monero has solved that issue and it does not matter if you see any "IDs"
I can count on people in the crypto community to do unsavory things with my money to my financial detriment.
A technological solution to a political problem. Visa/mastercard/banks will just censor the off ramps next.
> wallet based system
What does this accomplish? The same institutions will request proof that all transactions are compliant, which will most easily handled by simply banning the content.
The people pressuring visa and Mastercard to drop porn/sex related services are not going to suddenly roll over when those services switch to crypto. They’ll simply go for the crypto off-ramps.
They also already let you load funds onto a wallet for use later.
what would happen if Valve accepted Cryptocurrency?
in turn, what might happen if valve decided to become a cryptocurrency exchange exclusive to the gaming community?
EDIT: another solution is to use a load-wallet based system to shroud transactions from your financial nanny. money in, money out, no explicit evidence of a purchase.