Viewers are not the customer of the TV networks—advertisers are.

For a long time, those two groups had similar goals, though. Advertisers wanted lots of viewers and viewers wanted shows that lots of them wanted to watch. So the TV networks used ratings as a proxy for advertiser happiness and there wasn’t much of a problem.

The same thing was true for newspapers. More local readers meant local advertisers were happy.

via Seth’s Blog: The difficult challenge of media alignment.