You say it's a waste for 1500 KSTP to simply carry the national ESPN feed on a 50,000-watt clear channel station. Well, is the glass half empty or half full? KSTP used to have local Minneapolis-based sports shows. But with a popular 100,000-watt sports station on FM, 100.3 KFXN-FM, KSTP saw its numbers drop. So the local hosts were terminated and the station went with ESPN 24/7.
But at least there is an alternative to KFXN-FM if you don't care for what is being discussed or a sport that doesn't appeal to you.
KSTP fell victim to bad luck. They did well with talk in the 90s, with Bob Yates, Barbara Carlson, Don Vogel, Tommy Mischke, etc. They also were the original Twin Cities affiliate for Limbaugh. Eventually, they drifted heavily into conservative talk. However, when Clear Channel launched their own talk station ( originally on 100.3, later swapped with KFAN for 1130), they took Limbaugh and Hannity, along with a few local hosts from KSTP.
So, KSTP went sports. They had local shows, including Joe Soucheray and Patrick Reissue, who stuck around from the previous talk format. But KFAN was pretty well established, and was doing incredibly well. Even more so when they went to 100.3. That was tough to compete against. When COVID hit and sports events were cancelled, they couldn't carry on, and dumped the local shows.
Now, KSTP doesn't have much of an FM presence. Just the HD2 feed of KSTP-FM and a weak translator. Hubbard has another FM, but they carry a female-oriented talk format that is now pretty established (and likely a favorite of Hubbard president Ginny Hubbard Morris. They're probably shut out from acquiring a decent FM signal in the market, due to the company's local ownership of two FM stations and two TV stations. So, KSTP 1500 is what it is.
Personally, I think they should take advantage of their digital podcast operation and put some of those shows there. Perhaps there's still some demand from local listeners to hear Tom Barnard on the local airwaves, albeit him bitching with his family members. But aside from that, there's not a lot the AM station can do. Still, it's value is sentimental, since Stanley Hubbard helped found it a whole century ago. Whatever is left of KSTP is still the crown jewel of a family-owned company that's still around several generations later.