Undoubtably the Fairness Doctrine will come back with mandated programming and quotas. So, you will see a move toward subscription programming where the fairness doctrine is not applicable. Or, a rise in pirate radio that the government can't control.
There has never been and never will be "mandated programming" or "quotas" in this country, from the Fairness Doctrine or anything else. Just the fact that some monologue mouth sold you that story demonstrates the informational destruction a monologue free of a counterpoint foil can do. A few years back I had a story about Sylvester (Sean Hannity) whining "take my mic away Senator!" that would have served as an example. Can't find it now; it might have been scrubbed.
Obviously government doesn't "control" programming. It controls technical access to a limited air space, and it does that so we don't have what we had in the 1920s when all you needed was a transmitter and as the medium gained popularity the result was cacophony on the dial. Unfortunately in exercising that access control it has from the beginning favoured the commercial interests over the public ones, in contrast to most of the world. Which is why the quality of what's on our airwaves is the LCD swill that it is.
Of course there is government control of programming. That's why the networks and the FCC are all about! You have heard of the FCC right?
The technology that permitted nothing more than a transmitter to transmit is still there. It hasn't gone anywhere and there is still pirate radio. Which will happen the heavier the hand of government gets.
Liberals have the same access to programming as everyone else. The government supports liberal stations like NPR. Air America had their chance and failed. Not because commercial interests didn't support it, but because the public rejected the liberal bent.
Here is the difficulty that liberals face. They cannot control people to the extent they would like to. Liberalism at its core is oppression. It has always been oppression. They don't want radio shows like Rush Limbaugh on the air because once he's on the air, they can't stop people from listening to him and that's what they want to stop.