"Touch screen laptops will become a lot more popular eventually"
Touch screen laptops will do even worse than desktop touch screens. If you are in a physical position (in bed, laying down on the sofa so forth) where you can comfortably use a laptop touch screen, you are most likely not doing serious productivity work and would be better suited to be using a tablet. If you are doing serious productivity work you are most likely to be sitting at a desk/table and then you face same reason the desktop touch screens don't do well.
If anything, the whole concept of laptops is heading toward extinction, net-books are already dead (nearly everyone has stopped making them), laptops will be soon be such a very tiny niche market that we would not be far off off the truth calling them dead as well