So are Tablets. And smartphones to an extent.
Smartphones are computers too. My car's ECU is very much a computer too.
Computer is a very broad and general term to describe a machine that takes input, processes it, optionally stores it and provides output. Input doesn't need to be a keyboard or mouse, it can be sensors. Output doesn't need to be a screen or printer, it can be electrical signals to relays and switches. Storage doesn't need to be a hardware, it can be NVRAM, continuously powered DRAM or SRAM, etc..
Anyway, back to the thread topic, which is both old and get necro'd :
"If I were running Apple, I would milk the Macintosh for all it's worth -- and get busy on the next great thing. The PC wars are over. Done. Microsoft won a long time ago."
-- Steve Jobs, Fortune, Feb. 19, 1996
That's the man's plan folks. It's all going exactly according to plan. It's just the Mac cow is running dry for Apple and the next great thing is here now.
What if your work involves enormous amounts of writing? Or not even work, just your general usage. Am I supposed to do that on 9.7" iPad with virtual keyboard and reduce my efficiency significantly? Add a physical separate keyboard and you got a regular desktop with touch screen. Add a physical non-separate KB and you got a laptop with touch screen.
I've asked this question from you several times but you have never replied. Just because tablets do everything you do doesn't mean that that applies to everyone.
The man is blind to what the iPad revolution is exactly. Is it the form factor ? No, of course not, that is rather limited as you pointed out. Tablets as a form factor have never really caught on.
What about the iPad is different ? It's the iOS and the new paradigms it brings. No more filesystem, no more complex application hierarchies, Zero configuration. All the complexity hidden behind a walled garden of simplicity. This is the true revolution. People are scooping up iPads not because they want a tablet, those are awkward to carry around on work on, but because they want a device that "it just works!". Bring the iPad like OS to laptops, desktops, tablets, smartphones, create one big enough ecosystem and make sure the APIs are sufficient to build advanced software without breaking the simplicity of the system, and you've just "reinvented" the PC.
That is the true revolution. The tablet thing is just a fad like Netbooks. A compromise on everything.