Matt Spaccarelli is an unemployed truck driver in Simi Valley, Calif., and, in the eyes of AT&T (T), a data hog. The company’s meatiest data plan currently charges consumers $50 for 5 gigabytes a month—enough to stream an hour of video and two hours of music every day, according to AT&T’s own calculations. Spaccarelli is grandfathered into an unlimited data plan, and he makes good use of it.