I'm sure i'm the 100th person to say this, but with services like Hulu (for new episodes) and Netflix Streaming (for back seasons) this seems silly. I cut my cable off 2 years ago and still manage to watch any tv program I want. If it's streaming next day, I watch it there, the commercials don't bug me. If the network is too stubborn to stream it with commercials and risk a little revenue loss, I pirate it. It's all about ease for me.
The networks need to wise up quick. I'd gladly pay discovery channel direct for on demand streaming access to there most recent shows, but I don't want to buy it as part of a package full of 100 channels i'm not interested in, and I don't want to have to bend my schedule around when they think the programs should air, and I know i'm not alone on this.