I think regardless of timeline, Valve accomplished what they wanted which was higher adoption of PC gaming through handheld gaming. There’s been an explosion of PC handhelds in the market after their release and they’re the main storefront for it (even if it’s running windows). Their big picture mode worked extremely well with my Ally. Even though I initially bought the device as an extension for my Xbox with GamePass, I’ve found myself buying a bunch of games on Steam.