Your comment is a bit hard to understand, but I'll take a crack at what I think you mean. First, I think I noted 17 million POTENTIAL... It is possible that many of those 17 million haven't been throttled, and I doubt they would have a case if they did not get throttled.
However, given the quite low 2GB limit, if they are indeed cracking down based on that criteria alone, I'd guess a LOT of people with that plan have been affected. Also, the idea here isn't so much to get the $850 (and it appears it could be more or less depending on the length of the contract remaining), but to hurt AT&T as much as possible to teach them a lesson.