I believe we have yet to see the full effect of mobile computing. The troubles so far are (a) not everyone has a powerful smartphone in their pocket (but we're getting there) and (b) mobile data is too expensive. Once average computing power ramps up and data costs drop (think an orders of magnitude from current points) then we'll start to see what people really want to do on the run. That is, when we carry 320GB in our pocket computer running at 6.2GHz and can transfer 10GB of mobile data per month on an $8 plan, things are really going to get interesting.
Mokalus of Borg
PS - Those specs are not far off an ordinary desktop computer.
PPS - Except for the $8/month internet plan. That's pure fantasy.