Many users will not want to risk their privacy, data, and workflow on someone else's rapidly-enshittifying AI cloud model. Right now we don't have much choice, but there are signs of progress.
Many new games cannot run max settings, 4k, 120hz on any modern gpus. We probably need to hit 8k before we max out on the returns higher resolution can provide. Not to mention most game devs are targeting an install base of $500 6 year old consumer hardware, in a world where the 5090 exists.