It does, but they're not kernel modules and run in userspace so no game studio that values their game or protecting players from cheaters uses it, and it is not just a config change.
Anyways, from what I am seeing from tech trends, the future is multi-platform, and it's only becoming easier to code for everything all at once. Smart people are taking time and energy to research things like WASM and APE (which supports Cosmopolitan Libc), not to mention long-running initiatives such as containerization, the various JS engines and other languages which run anywhere, etc. Even with ARM vs x86 happening, software runs cross-platform more and more.