Even on the Desktop they are under 15%
It was always at 2060 level
https://www.techpowerup.com/review/amd-radeon-rx-5700/28.html
Not counting DLSS or RT even.
This is why “Fine Wine” was always a joke.
The problem is that NVIDIA makes super high end chips for HPC and scales them down for gaming.
AMD makes integrated graphics for APUs and SOCs and scales them up for gaming.
So it will always be an uphill battle for AMD.
Throw in historically low market share and competition from Intel on the low end, it may not be financially viable
AMD has to catch up to Intel first. ARC has better hardware support for this stuff