I think Apple may be working to get channels such as A&E, Discovery, etc. to have their own apps. This way, you buy the app, you buy the content that that particular network dishes out. The more apps you sell, the higher you can charge for advertising because you KNOW what is more popular because of REAL data on app sales, not some bs neilson ratings. If you want to go even finer grain, you can sell apps for particular shows and the same concept applies.
It won't happen over night, but the cable companies are crapping their pants right now. Follow Motley Fool or another investment adviser and they will tell you that an upheaval is imminent. The TWC thing is a stepping stone to something much more consumer-friendly in my mind. I think if all goes well, it would work like some of the independent music artists that produce their own content and distribute through multiple outlets, like iTunes, etc.