Touch screens are hot. Most people use laptops. Vendors need new features to hawk their wares. I predict touch screens will soon become standard equipment.
Mate. Most people have and use desktops (there's helluva lot more of them out there too).I doubt touch screens will become standard either (unless it becomes more affordable and the technology allows it to be adaptable with most software - somehow i don't think it will be that popular with PC gaming).
Uh, I beg to differ. Laptops are most common in the USA. The ability to shift from table top to table top or sit on the couch apparently trumps all.
I can't say I understand it, but most of the non-computer people in my life seem really enamored with the technology (I doubt they are exceptional). "Is this computer really fast? Does it have a lot of memory? Does it have a touch screen?" Perhaps it seems more friendly, or they feel the UI is more discoverable if they can put their hands on it? I suspect it's because of these people that we have a desktop GUI metaphor in the first place.
Vendors always need a new feature to push. In this I think they will find a receptive consumer. Price is of course essential. However, If every laptop has a touchscreen built in they will be become much cheaper. Keyboards used to cost well over $100 USD but no longer.
I don't think PC gaming is relevant. I doubt 5% of PC owners are core gamers. Such a minority does not get a huge amount of consideration in future UI developments. Casual gamers won't care or may even benefit from a flood of smart phone ports.
Surely you must see touch input is a big deal? I'm not suggesting mouse keyboard are going anywhere or that there won't be any growing pains along the way.