It actually might make sense. How many iPhone users really aren't big computer users? Quite a few, I'd imagine. Making computers that work like the phones they use every day could be good for sales.
As for tablets, as long as it fits in my pocket I'm happy. I carried around a 7" one for a while, but it was definitely not pocket sized and therefore I preferred something like a netbook for portable computing. The 5" tablet/phone devices (few and far between so far) are much more useful to me, pocket sized and convenient but still large enough to, say, remote control my PC at work while out for lunch across town. The 24+ hour battery life and always-on aspect also make it a much more reliable device than a laptop with a ~5 hour battery life.
