Yes, and it's been tried before. LibertyCoin, I think.
Write a Steam knockoff platform that's trustworthy enough for people to download, and load it up with dirty games. Put the premium on the customers if they want to use credit card transactions, otherwise push them towards crypto payments. Maybe you won't be an oligarch, but you'll probably end up with a reasonably sized yacht.
[edit] hell, in a few years if the winds shift you might be DraftKings.