the difference isn't they can't, they don't want to. you really have to deal with normies more to understand how they think.
so on so forth
youtube recommendation bonus:
and that's not even a steam game
you're assuming that valve will just release basic bitch big picture on linux, when it already has a dedicated interface you can see in the preview, and steam itself already tells you if a game has a linux version. integrating proton is piss easy, if some poles can bundle games with dosbox, valve can do the same with proton, and if it's not supported there's nothing preventing steam to tell you beforehand (for obvious reason to reduce possible support issues).
if you're not sure there's reviews, and if you don't wanna bother making an informed purchase just refund that shit afterwards.
and that's if valve doesn't filter unsupported games to exactly prevent cases like that.
you seam to believe console certification exists as some sort of seal of quality, when it's main purpose is making sure no one is able to break out of their walled garden, sets the console on fire (at worst killing the owner, at best preventing future purchases), or causes any other possible legal or PR headache.
and if you really need to:
>install windows
>install game
>it runs
Wow, so hard.
>inb4 "but it will run like shit, certification makes sure it's great"
hope you didn't buy cp2077 for your base ps4...
so they would buy it for the same reason they buy a switch? that's a good outlook then.
and instead of bing bing wahoo they get porn, given how many of them are coomers that might work out even better.