All you can eat internet buffet about to get stuffed-AT&T will cap DSL and U-Verse internet, impose overage fees

[Chakravartin]

...customers strongly believe that only those who use the most bandwidth should pay more than those who don't use as much. That's exactly what this does – and again, 98% of our customers will not be impacted by this.

Translation:
We've found a group of customers that we can charge more without upsetting or scaring off the majority of our customers.