> I could easily imagine a world where I get "crypto currency" that I can use across games.
Why would any company use a decentralized token to let you purchase things when they could simply make their own store currency/points and sell that instead? Look at all the F2P games that have in-game purchases, they all use points that are sold by the publisher that are bought with dollars because they make more money that way. There is no incentive to allow a decentralized currency you don’t control for in-game purchases.