That is what I am saying; Nvidia don't need or want an x86 license. Thier best move is to dedicate all posible manufacturing to AI but a fallback stratagy might be to outcompete Intel in CPU. (They tried to buy Arm a year or so ago but it was stopped by the FTC.)
The problem with arm is that it is lacking in software support and optimizations compared to x86; it's only recently that there's proof of viability of arm cpus outside mobile through apple, and they also have the advantage of full stack integration and over a decade of experience building the best performing ARM cpus.
So there's a reason why they'd prefer x86. Hopefully they manage to release an ARM competitor for the desktop market, though with AI boom, it seems more likely that it will be a server focused on supporting their GPU lineup.
I think the tipping point was a few years ago. The are simply more Phones/tables/tvs/cars then the have ever been desktop PCs. They tend to be more latency sensitive and resource constrained. Therefor it is unsurprising that more optimization work has been invested in ARM then x86.
Graviton's certainly work out better for every program I have tried on AWS (obviously this is mainly because AWS set the price to ensure they do).
I mean the are complex x86 programs that run just as fast for longer on battery on a M1 then a comparable Dell/Lenovo.