Agree, 4k is ready for regular PC gamers. Only those that spent a fortune on high fps 1080 will be dragging their heels on it.
My big issue with 4K for me is the poor state of monitor technology. It hardly seems to have improved in years, barely does HDR, with issues. Still using IPS or VA with their inherent problems and very expensive Vs TV's.
I'll move up when you can get something with OLED like visuals, no burn in, high refresh, HDR (1000nit+), 32"+ and £750 or less.
I think I'll be waiting a long time