The focus is not on finding a market and developing "progressive" talent; they're always, always focused on disregarding market demands and demanding that the government limit conservative talk and prop up liberal talk.
The issue for these think tanks is this: if 23 percent of talk radio listeners self-identify as liberal, shouldn't 23 percent of the shows feature liberal talk? After all, 43 percent of talk radio show listeners self-identify as conservatives, but 91 percent of the programming is conservative. No fair!