At this stage of the game what people want is CUDA. I just bought a new GPU and the only requirement I had was "must run reasonably modern CUDA".
Valve is spending a lot of resources and AFAIK so are all the AI companies in the asian market.
There are plenty of people who wants an open-source alternative that breaks the monopoly that Nvidia has over CUDA.
They’re not open source, for sure. But even setting that aside, they don’t offer anything like CUDA for their system. Nobody is taking an honest stab at this.
https://triton-lang.org/main/python-api/triton.language.html
Mojo has support for Apple Silicon kernels: https://forum.modular.com/t/apple-silicon-gpu-support-in-moj...