I wonder if it's the software industry's fault, where they design their software to max out current cards at common 1080p or 2560x1440 or whatever more common resolutions.
I just think they could make the software more demanding, or less demanding, and have to choose a sweet spot somewhere. But hardware is just doing the best it can.
So software has flexibility to be easier on cards or harder on cards, but hardware is stuck trying to do the best it can.
So if you can't max out the software, my finger points at the software not the hardware.