Nothing more disappointing to me than seeing a game I might enjoy… and then it’s only available on PC on Epic Games store. Why can’t it be available on Epic, Xbox game store and Steam? It’s so annoying, like you have no choice but to use Epic… which I would literally do ANYTHING not to use.
Each server would likely have to utilize a payment service. In that fashion it’d be no different than how stores host their own websites you can order from. In my mind, the federated protocol would simply be a means for a person to browse stores similar to how one can navigate a mall or market.
For games, the further benefit after would be that via a client of the protocol, you could then download your games from the various stores in a singular library page.