Tablets and pcs will converge. They're too similar in size and you shouldn't have to carry two devices of similar size.
Here's why:
- Tablets are getting more powerful
- Laptops are getting more energy efficient
We'll end up with a device that can stand alone as a tablet with the desired size for a user. I'm sure Intel and ARM will work to get there from their perspective corners as if their lives depended on it.
Add to that:
- Easy ways to shift displays to somewhere else (TV's or big monitors for typical PC kind of work) depending on what the user wants
- Easy ways to connect a keyboard or not
- That's it! You can already shift displays to a TV with airplay. Need to bump that up that bandwidth to support retina displays and/or gaming
I think the surface pro is a step in the right direction. I'll bet Apple will soon leapfrog anything it can do in an environment that I'd like. I'll bet the choice will be here by the time 2016 rolls around, and will just get better over time.
I think there will continue to be devices like that made, but I am convinced that for the medium term at least, tablets will be primarily companion devices. They will continue to be more and more powerful so there will be far fewer times where you find something you can't do on your tablet, but the reality is that tablets are best at 7-10", and laptops are best at 12-15". That's a physical reality that can't be overcome. I can work on my Surface Pro all day, but it's a constant strain and feels like a big relief when I'm back to my 14" laptop.