Another thing people do not consider is the high cost of entry in to radio. There is a limited number of stations anywhere you go. In some cases a new station, say, outside LPFM or translator, simply cannot be fit on the dial, so the radio station sells based on revenue, equipment, past performance, market potential and a premium on the fact there is a limited number of radio stations available at any one location.
Sure radio's selling price has dropped in recent years as larger groups have fine tuned their portfolios but the numbers are staggering. Sure, you hear about stations selling dirt cheap but there is a reason for that (in fact a friend bought a station for $30,000 in a city of 75,000 only to spend about $120,000 to replace rusted towers, eroded ground system, new transmitter and partly burned up phasor. Then he negotiated the land lease and rented studio space, installed a studio/transmitter link, built a studio and had to file a full proof with the FCC. All of that before one commercial was sold.
Many radio station owners, if the truth be told, likely work many hours a week just to generate the income to pay the bank (actually investors). And don't think operating costs are a breeze. A computer in a closet might need $20,000 a month before you even think of paying a salary.
Radio pays ASCAP/BMI/SESAC fees even if you run a talk format. There are annual fees paid to the FCC. And if you run a business, think taxes, property taxes, insurance and all those other things people usually don't think of like equipment failures and maintaining the facility in accordance with FCC Rules.
I'm not saying radio is the only business with high priced entry or that the struggle to reach breakeven is harder than some other businesses but I can certainly tell you it is not an easy road. The numbers could scare off anyone. And to make it worse, the FCC claims the license. In other words, you have been qualified by them to earn a license for a period of time. That's why banks won't loan money in most instances (you cannot put up the license as a guarantee). That means investors who are tougher to deal with and sometimes expect more.
A friend bought 30% of a small market station for $800,000. It was billing under $300,000 a year when he got it. He knew what he was doing and doubled billing and built the station's reputation to the market leader by about year 5. Now he owns 100% but walking in to that station with no manager or sales staff was pretty scary. That $800,000 plus interest was paid out at $6 a spot. Considering he was just what the station needed, it worked. He had to increase revenue and lower expenses to pull it off and managed to do that without diminishing the product for the listener or advertiser.
When you hear those commercials, it's the only audio that didn't cost the station and generally speaking, the only source of revenue. Certainly, you have to do right by the advertiser and the listener, both wanting different things, and have to try a happy medium where listeners like you enough to listen and advertisers get enough response to continue to buy your station. If you don't pull that off, you won't last.