Funnily enough, with the more recent generations of consoles a lot of the convenience (put the disk/cartridge in and play right away, no account tomfoolery to setup, minimal storage management, etc.) has been eroded. While I think steam desktop proper is still too complicated for a large swath of the normalniggers, the big picture mode on the steam deck seems to be sufficiently easy to understand that it could rightfully appeal to that demographic. What's holding it back is that many of the most popular releases are too demanding and/or have DRM which doesn't function with Linux. A return of the Steam Machine could further push Valve into the console space, with the increased functionality of Proton making it an actually viable product, but given the failure from their initial foray I imagine they're wary to give it another go.
Also, I predict Marathon will flop (albeit not to the same, pitiful, degree as Concord): Overfilled genre, unappealing visuals (I guess they tried making it look like a closet full of sneakers to appeal to niggers and other urbans?), and a studio that has burned its reputation with how its handled its prior game.