I agree with GregMargie on several points.
The people who are using into the triple figures of data each month - come on, your cell phone data connection is not supposed to be your sole internet connection. Additionally, I suspect a lot of people are using their smartphones to download tons of torrents. Message to parents of kids with smartphones - first of all, why does your kid have a smartphone? - you do realize that your kid can basically get on the internet and download whatever they want and watch it whenever, don't you?
Basically, when it comes to these mega-high users/abusers of data, if you actually need that much data, then you should have to pay a little more for it. I'm not sure what the appropriate price for that is, but anyway...I'm an unlimited data person on Verizon, but I rarely abuse it. I'm not sure I've ever broken 6 GB in a month.
That being said, Verizon and others are definitely licking their chops at charging as much as they can for data. I understand that they need to set some limits, but these piddly allotments they have set up with Share Everything are not future proof - heck, not even really any good now. Apps, streaming media, everything is trending upwards in terms of size. 3 GB of data will be nothing in a couple of years.