So your OS distribution can take care of packaging and distributing the FOSS components that make up your system, then your "
With a proper distro-agnostic platform you could get cloud updates, potentially cloud storage of saves/configs, and easy storefronts for purchasing. The publishers get a decent level of DRM (in license authentication when software is run in online mode) that deters most people from casual piracy, and as long as there's a functional offline mode it shouldn't get in the way of people who just want to play singleplayer games while travelling. EA and Steam's recent EULA updates now allow access to offline mode when your account is "banned", which has been a long-standing complaint against Steam.
If this was the case then I would buy there games.