AT&T isn't really advertising falsely, the data is unlimited. The speeds are limited.
They should be ordered to clarify their advertising and say "3G speed up to 2GB" or similar.
It's misleading at-best.
I have no love for AT&T and I'm glad the guy won, but if one of my customers sued me, I'd drop them in a heartbeat!
If you're not falsely-advertising your services, then you have nothing to worry about.
We run a hosting company and have been putting up with this for years. We provide underloaded servers that have packages with hard limits to prevent abuse and to ensure people get what they pay for. All these "unlimited" hosting plans have been scams from day-1 and we're glad someone is finally getting held to task for the dumbing down of the market.
It has just been discovered that research causes cancer in rats.