I totally think so.If people want desktop functionality in a portable device - will they pay extra in money,
. You'll have to ask the individual on that one, I'd say a lot wont, but some will.If people want tablet functionality, will they be prepared to pay some sort of penalty for a desktop to be thrown in - again they might have no use for it.
I personally think that if Microsoft can make a decent dent in the market with phones and tablets, we should see some exciting times ahead. If they cant, it looks like I'll have my PC's, Android tablet, Android Phone and iPads to play with.