To summarize: argument is made that because we have radios, with very different forms, all over the place, we should and will have internet-capable devices everywhere.

True, but note that many of those radios have other functions. Even though it would not be a significant expense to have your CD player and your radio separate, the functions of these devices are so similar, that it's just more convenient to converge them.

That's why, once I have a screen, memory, CPU, operating system, I want to have game controls, GPS, PDA functions, radio, TV, and anything else that can reasonably be fit into this device. Any function that doesn't make it significantly bigger or draw more power, ought to be crammed in there. This is why in particular it is crazy to me that the device doesn't have a set of buttons on the right side suitable for playing games. No extra power, no significant extra cost, but suddenly a whole raft of new uses. I don't want to carry a GameBoy as well, and even if I could have both for free, I would still want one device rather than two.

Once they're as cheap as you're talking about, I think most of our devices will still be as converged as I'm saying. You just won't take the one in your car out and put it in your pocket when you get out of the car, because you'll have one in your pocket already.