One of the bigger issues about PC gaming these days is the shader compilation stutter. Valve is able to precompile and upload these for SteamDeck, so a fixed hardware “console” from them will solve this problem too.
SteamDeck is pretty weak but games are still sort of optimised for it. Same would be true for such a console, making devs focus on a target platform directly.
Assembling PC yourself can have its own issues. You may not get all the ROPs, or a new Windows update may break your games, or you may occasionally update drivers to make a game more playable without black screens, or wouldn’t turn on with a controller when set up as a “console”. I’m not saying it isn’t doable, but there is an audience for consoles who would love whatever SteamDeck has done for handheld but in console form, and may not want to bother with setting everything up. Valve can disrupt that
Thousands of them already exist. They’re called PCs.
There’s some nuance.
Millions you mean.
Hundreds of millions.
And if you want that SteamOS experience; Bazzite and ChimeraOS is nice