They make no extra money from the tiny and unmeasured listening in TN or FL or ME or other out of metro areas or states. And listening at night produces nearly zero revenue anyway, local or elsewhere.
Well, one of their advertisers was flabbergasted when I called from Ohio and ordered an item from them. They said "We don't even advertise or have our product available in Ohio [although they do now]. How did you even hear about us?" Told them I heard their ad on WCBS and they were thrilled that I responded. So I told them to tell their ad rep at the station. I actually had someone, don't remember who, from WCBS that called me [guess they got my number from the company I bought stuff from, which I wasn't really happy about but, what the hey!] and asked how long I'd been listening, how well did the signal come in in Ohio, blah, blah, blah. Or maybe it was just a bored engineer wondering how well and how far the signal was getting out. Could only assume that they could tell advertisers that "Look, people well beyond NYC can hear us and order from people/company that advertise with us." Except Dr. Leiderman......if I ever hear another one of his ads........... So they may not have personally made money from ME but bet the company decided to keep advertising a little longer than they planned to so they made money off them. I'm probably the exception to the rule but I'm weird that way.