We're spending more time on our computers. Even though television viewing is up, there is still a percentage that they're losing. If they put programs on the Internet, they can capture more of the audience. That's one of the key factors driving the networks.
It's certainly time to do field trials and see what happens. Ten years from now mobile TV will be more common. People will be watching it at restaurants, sports bars, subways, buses, airports. But it will probably be 20 years before it's mainstream.