The future may see digital satellite and terrestrial broadcasting being used to deliver media content, while cellular data channels are used for feedback, interactivity and marketing, since you can't send a signal back up to the satellite from a low-power portable device -- but you can send one to a cellular base station located a few blocks away.

The ideal solution is, perhaps, a cell phone bundled with a satellite receiver. There's no reason why clicking on a hotlink embedded in a broadcast TV program -- beamed from a satellite -- can't initiate a response that goes back to a broadcaster using a Java applet communicating via 3G cellular