The problem is that AMD is nowhere close to DLSS performance/quality, AMD cards are good for rasterization but it's not enough. The other thing is that most game don't implement FSR because 90%+ cards are nvidia.
It's my understanding that there are 2-3x more PC gamers than console gamers, but the console gaming market generates more revenue when you include hardware. In fact there are probably more PC gamers today than total consoles ever sold.
I’ve never used DLSS or ray tracing or whatever Nvidia cooks up. I don’t know a single person that cares about those features and I know a lot of gamers.
The reason people care about fps because it used to be a fairly decent proxy for latency. Latency is what's actually important. DLSS makes latency worse.