If I were home, I would use the desktop computer I have at home. So I wouldn't take anything. If I were at the beach, I would use a pen and a pad of paper. If I were on a train, I would read a newspaper or write on a peice of paper. I don't need to buy several thousand dollars of electronics to meet these needs.
I think the cell phone contract is the model every company would like to emuiate ultimately. I pay almost $1000 a year for a phone + network access. If only they could get something like that kind of revenue going for what most people now consider to be a "laptop" then it would be golden. Of course, the idea would be to sell everyone on both (or muiltiple) devices, so that instead of buying a laptop every couple of years for $700, they get us all on the treadmill of multiple devices and network access for everything we now use a computer for. This idea that I need to take something like a laptop or table to the beach is sort of weird, but all they need to do is convince 20 million people globally that is is a necessity and they are making a lot of money off it.