I had read this in another thread, but radio was one of the first (if not first) media form to be entshittified. Decades before we even had a term for it.
My comment pertains to the USA, but regardless of where you live, there is a very strong likelihood that your local commercial stations are owned by a company like iHeartRadio and much, if not all, of the content is syndicated.
The only exception might be a local nonprofit radio station. You probably have at best one local station in this case, unless you live in a major city broadcast region. Keep in mind I mean one local station that plays music. A local NPR station is probably separate from this. Even most of NPR is syndicated, however.
If you're lucky, a local college might still have a radio station broadcasting over FM, but so many have moved online since you then don't need an [expensive and volatile] FCC license.