Could be. Restaurants typically only have margins of around 4%, though. I know, at one point, 810 Zone was a partnership with KC Hopps. It's not on the KC Hopps website anymore, though, so I don't know if it's still affiliated with them. I know the one on the Plaza closed several years ago, and I'm not sure if the Lee's Summit location is still around. The Leawood location is still around, or was a few months ago. As you probably know, Union is also involved in a few other sports radio stations, including Wichita and Louisville. Guessing those make pretty good money, too, and I believe those were bought a lot cheaper than when they had to buy Jerry Green's family out of WHB (which they paid for by selling their FM to EMF).
Fair. I seem to remember KPRT getting the bulk of its money from advertisers rather than paid preachers, though I rarely ever listened to it. Didn't listen to KPRS much either for that matter.
It wouldn't seem to be working out too well for them so far, though the TV networks might be having better luck than the radio stations. I don't know how serious it is, but I've been seeing reports for at least the last year about one of the TV networks being interested in dumping its O&O's and shifting to a distribution and online model. Radio also didn't benefit from being several years behind when it came to streaming. The big radio operators knew what was coming, but they took several years to develop any sort of strategy. CBS Radio had a policy against streaming altogether until around 2006, and Clear Channel didn't start shifting its stations to iHeartRadio until around the same time. Streaming anywhere outside of the home or another fixed location like a hotel room was impossible until I got my iPhone in 2009, and, even then, only the largest broadcasters had any sort of sizable presence. Only a handful had their own apps. iHeartRadio was nothing but streaming the on-air product until about 2012. Pandora had quite-a-bit of a head start, and Spotify had already launched in the US, at least as a beta, by the time iHeart offered curated stations and on-demand content. TuneIn didn't become a thing until around 2011, and it only offered a paid app for several years before introducing the free version. I ultimately bought it around the holidays that year when the App Store ran a half-price special on certain paid apps. I got for $0.99 when it was regularly $1.99.
If radio had gotten out in front sooner, it would've had all the visibility it needed. It's a common problem. The situation isn't all that different from retail. Sears may be the most successful business ever to use the mail order catalog, but it got behind on the internet and squandered its lead to an upstart called Amazon. The other brick and mortar retailers have suffered similar fates, though most of the large retailers are still profitable and are still playing catch up. At least most of them can sell immediacy, which Amazon can't or won't unless you pay high shipping charges. The record labels, by the way, made a similar mistake. They had been approached about selling individual tracks online in the mid-to-late 90's and pretty much laughed that person out of the room saying no one was going to buy $1.00 individual tracks when they could have a whole album. We know what happened after that.