Interesting how so much talk about "non profit" and "non commercial" centers around religious formatted facilities that seem to, in many opinions, get a break.
Don't forget Public Radio ... WPLN here is largely listener supported via sharathons and large donations from corporate support and foundation.
In many cities some of the best looking facilities you'll find (and always the cleanest purest signal) is the NPR station.
One difference is ratings. Having access to Arbitron numbers and reading both commercial and non com numbers, it's impressive if not staggering to see the NPR station in or near the top tier. In Atlanta WABE is not only in the top 10 with 400,000 cume but in morning drive the adult numbers rival everybody. In Nashville WPLN continues to get not only big numbers, but quality listners.
Or put another way, those who listen to those stations are not even reachable with the stations we all talk about.
With the quality listener advertisers would love to get, and the consistency NPR stations have, I've wondered for years why more "commercial" stations with all their consultants, research and answers to everything, don't attempt to steal some of the NPR ideas. Their approach isn't necessarily that much more expensive but in a world of sameness and unoriginality, during drive time they speak to a lot of influential people.