You really see offices full of workers staring at tablet PCs, trains & planes full of road warriors bashing out long reports on touchscreens?
The home market may primarily shift to tablets; I'm not convinced by that and I think there's still a problem with the use case for content creators on tablets which includes an awful lot of school children. But the market I absolutely can't see abandoning PCs as we see them now and moving to handheld touchscreens is the office market and that's far from insignificant.
Tablets cost considerably less than desktop computers. There is nothing preventing you from being able to plug a second monitor and a mouse into a tablet and use it exactly the same way that you use a laptop and a desktop today.
At the moment, they're significantly more expensive and less compatible. They're also, by virtue of design, far easier to steal / lose and we've had quite enough (UK) stories about laptops being left on trains by mistake or stolen from homes and critical data being leaked as a consequence. Also, I can't see many people wanting a 10" desktop monitor or a 17", let alone 22", tablet.
I don't dispute it could happen, but I'd be surprised.
The home market may primarily shift to tablets; I'm not convinced by that and I think there's still a problem with the use case for content creators on tablets which includes an awful lot of school children. But the market I absolutely can't see abandoning PCs as we see them now and moving to handheld touchscreens is the office market and that's far from insignificant.