Hmm, that’s an interesting question. I don’t think splitting up steam makes sense, since they still provide a good service for everyone.

Maybe change the steam license (and everyone else’s) such that users are closer to actually owning copies of the games. Give the consumers some guarantees that go beyond good track record. As it stands, I think Steam would be able to charge you money per download of a game or require a subscription fee for you to be able to access your library or some shit like that, and most consumers would be effectively forced to pay up.

I don’t know though, perhaps it would be smarter to leave them alone and punish them only if they abuse their monopoly power, because leaving them alone has thus far resulted in a pretty healthy and thriving market.