Don't pay attention to this NYT story that looks at how great NBC is doing with the Olympics, which makes the implicit point that the idea of tape delay and restricted access to realtime online content and streaming increases TV viewing. My view is that this burst of success is akin the wild flowering of plants in a hothouse as the temperature rises - just before they die. Instead, look at the numbers that show they'd be better off truly embracing multiple distribution channels. Or jump over and read what Mark Cuban has to say about the impact of HD and large screens on viewing habits.
The long and short of it is that we are living in a realtime world now, and attempts to turn back the clock will fail over time. NBC (and other news outlets) need to think about if they want to live in that world, or be relegated to the history books and and a steadily aging viewership. Which sort of describes their present now, doesn't it?