Libs are either hostile to or ignorant of market-economy theories. Otherwise, they'd know the basics of supply and demand.
Right now, there is an oversupply of liberal media. As a result, those who demand it are more than satisfied. It's why Air America is not doing so well.
If the founders of Air America had any clue about market economies, they'd know that their product would be hard to sell in the current marketplace.
I suspect that, like dried up old dog poop, real "demand" for any liberal media is low.
Knock out the artificial supports on most of it and ya got nothin'.