With a potential cash cow growing up demanding touch interfaces, I forsee R&D dollars in the technology's future. Is there an popular OS company today that does not make a touch screen focused OS? I cant see touch screens ever being popular with desktops because of the need to reach across your keyboard to touch the screen. However, I do see the laptop becoming the defacto PC in an increasingly portable focused world. That trend is already in place. In addition to ever increasing laptop sales, how many people post for technical help on the DDO forums say they are using laptops to run DDO? I would argue its about 50/50.
As far as WoW, my point was that the eventual migration away from traditional desktop based MMO's would be the real source of its eventual downfall, not competition like everyone thinks.Only the inevitable change of the market itself can kill WoW. Well, that and if they pull something like SWG did.