Ideally if I'd go with just bitcoin (or second best usdt too), but the fiat part is for those who want a solution with that.
Regarding PPs wanting to interfere, they'll try, but they won't be able to stop it, because it'll be a normal flow with their system, as in a normal company setting up a payment gateway for their own accounts. There won't be a middleman (like steam/gog) to centrally attack, and there's no special system, it's just nostr in the background managing this flow that's it.
With that said / meaning, if visa/mastercard/etc come to me and say 'stop selling these set of games or we'll freeze your account', my response would be 'i'm not selling it, talk to the seller, i'm just a browser not a middleman' and in case they do unjustly freeze my account, it would not affect any seller, unlike all other platforms which would result in their instantly failure and bankrupcy. So they have to go after each individual seller to stop the sale of a single product, and even if they do, the seller would simply swap to a different payment system and that'd be that.
