Or even what phone manufacturers do with their screens. The problem isn't ability though it's cost. The market for laptops is seriously cost competitive and customers don't know if a trackpad will be good or bad until after purchased (with the exception of a few brands like apple).
Isn't a trackpad essentially a touch screen? Non-Apple phones to that just fine. There's the tactile feedback, but even the old-style physically-moving trackpad would be better than what vendors have today.
