Back in 1981 when I was in a broadcasting training program (yes I considered that at one time), one of my professors said that the reason for all of those caps on radio ownership at the time was primarily because of available space on the dial. This was especially true with AM but it is now becoming largely true with FM as well. The professor went on to state that while especially commercial broadcasters were expected to make money (in fact, if memory serves, the FCC used to investigate potential broadcasters before giving them licenses to make sure they had the potential to, if nothing else, not lose money), the primary purpose of radio and TV broadcasting was to serve as a means for the broad public to receive information (otherwise known as public service requirements) that they couldn't get elsewhere so that that public could make informed decisions on the political issues of the day.
Now we're in 2025, the broadcast industry is asking the FCC to lift even its minimum wavers on broadcasting, most public service requirements have been gutted, and many, possibly most, Americans are turning, with the able assistance of their on-line social sites, to issue-specific groups for public service information, groups that perhaps have a bet in the outcomes that the general public does not know about.
Radio may be dying a slow death, but more importantly, the public information, the glue that kept society together, is dying an even quicker one, and I don't think that the continued consolidation of radio stations among fewer owners is going to help matters.