Mike,
I'm not saying you're wrong. I am saying, however, that there's a limit to how far down it can come.

A lot depends on how quickly we get true (seamless) roaming from hotspot to GPRS. If I log onto a hot spot - and then find I haven't finished, but I've got to move (catch a train, taxi, whatever) then I won't mind too much doing a few close-down operations over GPRS - you know, saving the file, leaving the chat-room, and so on.

But even then, I'll be sure to set my system up so that if it sees something that isn't GPRS, it drops off instantly.

So the question - which I can't answer - is how much of the time I'll be in reach of a hotspot, and how much of my work will simply have to be done RIGHT NOW whether I'm at a hotspot or not.

If the volumes go down, then the network will have to keep charges relatively high. If the volumes go up, the networks will have to increase their provision. Either way, it doesn't sound like a formula for huge profits.