If Valve really wanted to make a splash, they could release a desktop version of SteamOS in October, right when support for Windows 10 ends. For additional damage, they could bundle in Half-Life 3. Just imagine the coverage this would get.
OP clearly overestimates how many people would use SteamOS or any other Linux distro for that matter. Most users are casual gamers these days, they are not changing OS just because there is a forced Windows update.
Yes and no, people can still use win10, it just won’t receive patches anymore. And in this particular case, my best guess is, that most people would rather use and outdated OS for a long time, rather than changing the OS altogether. Not every game is on steam, also not every non game programm is easily available for Linux. Humans are lazy.
That would be quite the power move, but unfortunately Steam doesn’t hold that much power alone, I think. There are still enough games that are not on Steam. As of today , Microsoft is the biggest games publisher (with Bethesda, Blizzard, Obsidian, ID, Mojang etc. belonging to them) and there are also giants like LoL or Fortnite.
Yeah that’s true, I think the biggest hurdle are games that use anticheat that don’t work on Linux, which are afaik usually multiplayer games. So they might be able to pull gamers, that only play Singleplayer games.
Shower thought: Valve could do the ultimate boss-move this year
If Valve really wanted to make a splash, they could release a desktop version of SteamOS in October, right when support for Windows 10 ends. For additional damage, they could bundle in Half-Life 3. Just imagine the coverage this would get.