Right and itch.io and much besides. However, these integrations are janky and not built in as first class console experiences. Not that they need to be necessarily, I think having the steam store is enough in many respects. But for me, the dream is being able to browse and install games from itch.io with the same convenience as steam itself. So there's at least notionally and unclaimed lane for providing that kind of experience. It's the only available Lane that I can think of for out-Steaming Steam.