You're talking about one product, which is the 4090, which is 0.88% of all GPUs used by Steam users [0]
The top GPU is the 3060, at 4.89% which both Intel and AMD match with their offerings [1]
The top AMD dGPU is still the RX 580 at 0.97%
[0] https://store.steampowered.com/hwsurvey/Steam-Hardware-Softw...