Lots of Windows users are puzzled as to why they can get very high res tablets and phones, but not many laptops (though Toshiba and Lenovo make some).
Whilst more modern versions of Windows are saner in the way they deal with UI scaling, Adobe isn't quite there yet.
However, the following thread suggests that Adobe are actively working on this:
My point is that photographers and artists with money are the people most likely to benefit from non-Apple laptops/monitors with very high resolutions. Until applications take advantage of high res monitors, people will have less reason to buy the hardware.
[CAD benefits from very high res displays because of the appearance of single-pixel diagonal lines... for this reason (and that CAD workstations have had the GPUs to drive high res displays), Solidworks et al have had the option of scaling their toolbars for years]