See! You couldn't name another main stream media TV station that is even partially to the right. Here is another chance for you. Which of all of those liberal TV stations I mentioned do you think is the most conservative? Explain why. Provide evidence if you can.
And that's how it should be. Stations that promote populism or pander to radicals should be rare.
First of all, the majority of the population (e.g. 70%) are neither liberal or conservative, they are moderates, independents or don't care about politics at all (just want to get by, love their kids, struggle with a shitty job or no job at all).
You tend to call "liberal" to news stations that cater to the fringe left, but also to the majority (center, independents, etc...) Of course, they are on YOUR left, damn it, 80+% of the population is! Of course they often advocate views that you don't like (if they should go beyond news and be opinion makers is another discussion altogether). Isn't YOU that are wrongly positioned, that have a fringe and radical viewpoint?