Sorry that I don't get your point about the market.
The foundations was a try to help the OP. So it's not completely useless. But I doubt it's bringing in much money.
I know games who are sold on Steam or Itch despite being FOSS. For example Gearhead Caramel. Maybe that is a solution? Simply driving "two lanes".
I see now that the OP wants a libre solution. Maybe libre crypto currency? [Edit: Wuzzy didn't write that cryptocurrency is absolutely trash.]