Ask not for whom the bell tolls...
It tolls for TV.
Cutting back on primetime hours because you can't find enough good programming to fill primetime seems like cutting off your nose to spite your face, but cable and the Internet are dilluting the audience like nobody's business. It's very similar to what's happened to newspapers.
One thing I often think about: In an On-demand world, will there be anything worth demanding?
More NBC handwringing here.