One thing the answerers haven’t pointed out so far is that, controlled by big business or not, the news media are still businesses themselves. Content is dictated first and foremost by what sells ad space. In the case of ‘news commentators’ – and you should be able to tell from the very title that this implies bias – it’s a question of ‘is the public willing to buy this?’ Not in a believability sense, but in a cash-on-the-barrelhead sense. I think we’ve seen a dramatic surge in commentators on the air, in the papers, and in books in the past three years because the 2000 elections served as a clarion call to opportunistic hacks throughout the news media: At the moment, there is easy money to made working both sides of the street. Thus I find it infinitely amusing to go into a book store and find the ‘dueling pundits’ table – a big shiny display of all the best by Michael Moore, Anne Coulter, Rush Limbaugh, etc, etc, all of them screaming about the media’s liberal/conservative bias. You pays your money and you takes your choice.