AT&T Learns Exactly the Wrong Lesson About Data Usage
The author really hasn't considered it from AT&T's perspective.  On one end, they're hearing complaints about their terrible network, and on the other end, they're facing large costs to improve their infrastructure to support people with unlimited accounts.  Aside from the comparatively small increase in subscriptions they'll get for their improvements, they'll see no income for their investment.However, if AT&T were to force out the unlimited data pricing model and replace it with per GB pricing, they'll be able to fund the scaling their infrastructure up as the usage increases.  Similar preferences for per-GB models have been voiced by other telcos as well, claiming "unlimited data is dead" (I don't know where I read this).  Frankly, I'd be surprised if there wasn't some collusion amongst the big telcos regarding this.I'm not saying I'm happy about this, but I think the scenario I describe is much closer to reality.