if it was 80 20 you might be able to sell me on the - liberals don't listen to the radio market forces argument, but the major progressives can and have beaten the major RW shows on an even playing field. they seldom get the chance.
the fact is that in most parts of the country there are NO free alternatives for political talk and they like it that way. if your only choice is an ignorant racist liar who's been wrong about everything major but he's the only one on where you get weather sports and traffic, or he's the only one period, or the boss has him on, he's still the mostly likely one to be on.
and in many blue areas you get all RW, even overlapping, and NO progressive. the profit driven market argument makes no sense- it's an excuse that's used all the time to justify the monopoly.
CC is a big part of the radio monopoly which a big part of the republican media machine- the most important part of it- it exists primarily to repeat and reinforce lies and enable the corporate/republican agenda- not to entertain or sell ad time. they would have to be heavily subsidized if they weren't selling ad time but i wouldn't put it past them to put some of that citizens united money in there and i'll bet they could find a lot of rich republican sponsors to help out.
and i'll bet the whole deck of cards would fall if our universities started honoring their mission statements and broke those sports contracts on limbaugh stations- that why most of those stations sell ad time.