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A comment on Why AT&T Killed Google Voice. Parent comment

Re:Why AT&T Killed Google Voice by likpok on Wednesday August 19, 2009 @10:26AM (#772785)
We don't know that this is still the case. Text messaging is very popular, and what was once a little-used patch of bandwidth might not be so spare these days. This is not to say that the charges are warranted (except that people pay them) but that the 1985 unused-band consideration isn't as applicable.

This is the basic problem. Geeks like the idea of unlimited bandwidth, but it really isn't a possibility. Physics tells us that you can't have it, especially over wireless.

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Re:Why AT&T Killed Google Voice by silentOpen on Wednesday August 19, 2009 @12:45PM (#773054)
The only scarcity is in your cell, right now. In 99% of cells, txt messages are free as the signal time slices are going unused (no other texters, low signalling use). At, say, a rock concert, the wireless tubes might be crammed but that's why SMS doesn't have a latency (or delivery?!) guarantee. Also, a mobile base station could be set up at the concert to get more airwaves or there may not be enough voice channels.

So... txt messages are essentially free.

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