I get what you are saying. I have a problem with people going to regulators to force a company to provide a service that they no longer wish to provide. Obviously AT&T wants out of the unlimited data space. For what ever reason, it bogs down there system, costs too much, they make more of a profit charging a different way. Whatever the reason, they want out. They should be free to do so.
AT&T offered unlimited plans back in a very different technological market. The bargain they offered its customers wasn't unlimited data w/ netflix, hulu, pandora, facetime, or any other data hog. But things change. And in current market conditions, they say no. That's ok, let them.