PM, although many large corps are indeed conservative, that does not by any stretch mean that the folks who run the networks are therefore conservative.
Ownership and operations are distinctly different. And the Big Three (ABC, CBS, and NBC) are truly Liberal in their daily routine.
Look at Fox News. By first impressions it appears to be rather right winged conservative. but upon further review, it is indeed "fair and balanced". It is simply the RELATIVE difference from the other channels that make it seem so far to the right.
Gone are the days of Walter Cronkite telling the news as it occured, not as he deciphers it.
Instead, today we have Dan Rather spewing "we are winning" when it seemed Gore had the lead in Florida.
Big corporations aren't "by definition" conservative. Nor are they Evil. But the liberal news has you believing that they are.
And the Liberal news has convinced you that it's OK to run sitcoms over a Presidential speech explaining the depth of our purpose to remove Saddam.
And you don't mind...