Most PC gamers are less aware than console gamers about hardware and are just going to go out and buy as much of the desired brand, nvidia, as they can afford and call it a day. You're forgetting that PC gaming is largely 1080p 60hz low details and full of people that will happily go out and get a 4060 because it's a higher number than 3090 and avoid AMD because it's the bad brand.
Even people who are aware of the differences still will buy Nvidia GPUs.... I find it interesting how easily people switched from intel to amd cpus. I've done countless Ryzen 1000-7000 builds for people who switched from intel to amd but those same people are like na I want an Nvidia gpu even when the Amd options is slightly cheaper and offers better rasterization performance.
I thought in general with all the people switching to ryzen based PCs people would start being more open to their gpus.
Now for me they haven't offered anything compelling enough to switch but I only buy in the high end either the top or one tier down but at the lower tiers amd is pretty competitive.
I don't know about the console gamer thing most console only gamers I know think a PS5 is more powerful than a 4090 lmao.