The fact that a 1920x1080 is only available on a single production laptop, the Sony Vaio Z and a small number of 17" laptops (possibly some 16"ers too) makes me suspect that the market for high resolution screens is very slim.
The best I can tell, the availability of high resolution screens on laptops has actually dropped over the past few years rather than increased. It seems rare now that screen resolution is even an option on laptops.
Personally I'm one of the people who is in the market for high resolution laptop screens. Unfortunately its a choice between high resolution and durability or size. I'm never traveling with a 17" screen again and I don't really want a poorly engineered Vaio Z.