Fear not, the dark ages are ending.
My Surface Pro 3 has a 12" 2160x1440 pixel screen.
You can buy a 15.6" Lenovo (at least a couple different ones) with 2880x1620 pixel screens, and they're even IPS.
My beef with those resolutions is that they aren't too terribly usable without scaling, but not everything on Windows scales well.
