In earlier years, such as in the '60's, news organizations were not considered a profit center by the networks. The idea then was to provide information, not to sell product or to entertain. When the latter two considerations overrode the first consideration, we got what we now have with CBSNBCABCFox.
Salant in his own words: "Our job is to give people not what they want, but what WE decide they ought to have."
Better take another look at Salant.