While its true that mobile data costs are increasing in the US, consumers are also getting a lot more for their money in terms of what their smartphones are capable of doing with that mobile data feed. AT&T's website now features a chart which estimates that 2GB of data is enough to send 10,000 emails, but when you put that in terms of watching mobile movies from Netflix or HBO GO, that amount of data doesn't go nearly as far. It's easy to exceed 2 GB quickly with the new Netflix apps for Android and iPhone.
It's becoming more common for people to watch a full length movie on their phone or tablet computer, and many also use phone tethering to connect their laptops to the Internet and watch movies that way. As these practices increase more people will find themselves hitting new imposed data caps from the major carriers.