APU's are "joke" but also low end gaming.Haha desktop APU's are a joke for gaming, more like ultra low-end and only suited for 720p or 1080p (on low) gaming. However, we are talking dedicated...
Sub 250 dollars GPU are low-end.
Mid-end is 250-500 dollars.
Highend is 500+
Talking about prices before pandemic or now? Using that pricing, RX580 is high end. It was around 200 but now it's over 500 making it high end.
6900XT and 3090 are only cards that go around 1000 dollar mark MSRP. Current pricing for 6800XT makes it enthusiast class, so Nvidia is far from 99% there. Don't mix current prices with prices before pandemic.1000+ dollar segment is more like entusiast class and Nvidia sits on pretty much 99% of the market here.
Nvidia also dominates high-end market tho.
AMD mainly competes in low to mid-end segment.
Again you "forgot" HD 8800 series. Scared?