Why would a miner use a significantly more expensive professional GPU, when a cheaper gaming GPU performs just as well for them?
At least when you compare raw performance per dollar, gaming GPUs are a lot cheaper that workstation GPUs. You may get better drivers for professional Applications, and maybe even a couple of extra features, but those are not important for mining.
And yes, i dislike the shortage as well. I was lucky that i was able to buy a card directly from AMD last year, so for the forseeable future i am out of the market.
I suspect that we will see a stagnation, if not even a regression in graphics quality over the next few years. Not that i care, in my opinion we have reached a "good enough" in graphics quality some time ago. More is window dressing, except maybe for VR, since that needs high framerate and high resolution.
Even beginner GPUs are starting at 300 Euro. Add to that the increasing energy costs in Europe (Some suppliers in Germany take more than 60 Eurocents per kwh!), and that the modern performance increases are mostly bought by increased power consumption, and many gamers will not be able to invest into modern GPUs anymore. So new games need to reduce their requirements if they still want to target the PC market.