I believe there will be a major cultural shift to tablets/phones/handheld.

The social implications worry me -- mainly that the most popular handheld devices (iOS) are _locked down_, you can't actually install whatever software you want on it.

I don't know if the actual experience of using Android, for non-techies, might end up seeming similar?

The social implications of this worry me. We spend increasing amounts of time on our computers, and have decreasing power and freedom over what software they run how.

I think your concern about it being harder to create on tablets, and the social implications therein -- is also legit, but it worries me less than the loss of control over our devices. People will find a way to create, although the nature of what they create will be affected by the affordances of the device, for sure. (there will be a lot more 140 char poetry, heheh)