Linux adoption is 100% incidental to to Valve investing in their own platform, which happens to be built on Linux. It has little to do with the technical merit of the platform where games end up. BSD isn't one of the biggest gaming operating systems because it's so great for games, it's because Sony needed an OS more free than Linux for their console.
> Linux adoption is 100% incidental to to Valve investing in their own platform, which happens to be built on Linux.
I'm not sure if you realized it but you are arguing the same point many others have been in this post. Apple is not investing in gaming, especially relative to their market cap compared to valve. Valve is making gaming on linux a reality because they are investing in it.
Apple has the money, they don't have the motivation to make it happen, because they don't want to participate on an open platform. That would be counter-productive to their goals of a walled garden.
If you buy into Apple, you cannot leave their walled garden and that's by design, with no plans on changing.
Especially DX12 giving so much more control has actually backfired in a lot of instances, because game developers don't treat PCs with the same optimization care as they do consoles. Consoles have standards (and reject bad builds), for PC you can always pull a Todd Howard and tell users to upgrade to compensate for their misuse of the APIs.
Windows has traction by market saturation, not the technical merit of their Graphics API.
It's merit is utterly irrelevant. It's good enough, and good enough with other avenues of investment win over "the greatest thing of all time" every single time.