Phoronix article: https://www.phoronix.com/news/Steam-Machines-Frame-2026
Also listed here: https://store.steampowered.com/sale/hardware
Valve has already sent support for the new Steam Controller upstream: https://www.phoronix.com/news/New-Steam-Controller-SDL


Not to mention that Steam does have competition as an app store, stuff like GOG. I mean, it’s a little bit obnoxious to use both at once, but really not that much of a hassle.