Nah, their people are way involved in mdarray and ROCm is looking to have the "oh no its broken again" bit flipped off in the RDNA 4/5 cycle.
NVIDIA wants Python and C++ people, they want a new thing to moat up on, and they know it has to be legitimately good to defy economic gravity on chips a lot of companies can design and fan now.
Intel and AMD don't have anyone but themselves to blame.
And Khronos always expecting the community to do the work for their standards, filling in the missing pieces for actually excellence in developer experience.
You don't seem to know what Khronos even is, at this point. It is a nonprofit consortium, joining the group for the community effort is the only reason it exists.
By blaming Khronos you're really just reiterating blame on Intel and AMD with the tacit inclusion of Apple. I suppose you could blame Nvidia for not giving away their IP, but they were a staunch OpenCL supporter from the start.
Well I blame our legislators, our regulators, and a public who tolerates low integrity, low competence leadership. A society gets what it pays for with the standards it sets for its leaders.
Out of a great many outcomes a very topical one today is semiconductors, and the outcomes rival any on anything for corrupt, incompetent, and entirely consistent with our speed run of the road to irrelevance.
First class support for Python JIT/DSLs across the whole ecosystem.
Change the way C++ is used and taught, more focused on standard C++ support and libraries, than low level CUDA extensions.
So in a way, I think you're kind of right.