Comment: It's because

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In reply to comment: What does "the money" have to (see in situ)

It's because

the money is where the power and influence is.

Fox and CNN, MSNBC etc. are all CORPORATIONS.

Corporations exist to make money or they go out of business/ get replaced by another entity that gains the money/influence.

It's a balancing act. Yes, there are outside influences for the media, but that media has to maintain market position or be pushed out of the game altogether, by something else like maybe Liberty News Network.