The little known history of the Fairness Doctrine, and how it changed America

[Engineer]

What it boils down to is money.  People want to listen to conservative talk show, and not the liberal ones.  This translates into advertiser dollars.  No listeners, no advertisers' dollars, the liberal shows get canned, because they don't produce a profit.

As with any company, if a product doesn't make a profit, you get rid of it and find one that does.