A common argument is that it's easier to manufacture High-DPI displays for tablets and smart phones because you get fewer defects over a small surface.
But we're talking about a 13″ 1920×1080 laptop display here. The screen is not that big compared to the 10″ Nexus at 2560x1600.
Before laptops will catch on, Windows will have to - Windows on a small screen at a very high resolution really doesn't work well.
It might be ok if you got up to a multiple of 1366 x 768 pixels, so you could scale icons up to 2x size, but lots of Windows applications simply don't cope with very high resolution screens, so icons, buttons, etc, are rendered far too small.
But we're talking about a 13″ 1920×1080 laptop display here. The screen is not that big compared to the 10″ Nexus at 2560x1600.
Laptops really have to catch on.