...the names mean whatever Nvidia wants them to mean, and cost whatever Nvidia is willing to give them to consumers for.
And to be clear, at these prices, neither AMD nor Nvidia are having difficulty selling their latest and greatest.
I think we're already seeing it, as you have an effective 'performance floor' for AAA-gaming. The middle seems to have mostly fallen out for the moment, so either you just need the minimum for whatever you're doing - and that minimum could be integrated into the CPU! - or you need the fastest thing you can afford.
I think there's still room for even higher-performance parts, and even higher prices. I'd prefer not to pay them, but with RT becoming ubiquitous, if performance can be scaled higher, there's still a market for that stuff.