Time's almost up for AM. There is no solution in sight.
Taking an anecdotal muse here and running with it for a whiile .....
I've driven to Florida many times, starting from Philadelphia and Long Island. That's a lot of states and a lot of stations. Around 1970 the first hint of 'sundication' or 'streamlining', for lack of better words, was the number of fake-Drake Top 40 stations on the AM dial. It was not even two years after that when the AoR format caught on big time -- on FM. Some will argue, but the opnion here is that the migration was not coincidental.
It used to be possible to hear just about any form of music on the long trip that suited your needs at the time. Washington DC had some real good radio (and I'm not speaking just Top 40). Richmond VA was a terrific market.
The smaller cities/exits on U.S. 301 (largely to become I-95) provided a Farmer's Almanac of local radio, music and voices.
I can't recall the call letters or the town, but there was one station I visited, a bit off the beaten path, in coastal North Carlina. They were R & B. I might have been the only honky in the area code, and as such my visit was treated with a bit of standoff-ishness and skepticism. Then I happened to mention 'WWRL', which at the time was the big Soul station in NYC. From there on in I was welcomed.
I visited WPGC in Washington, and WGIG in Brunswick Georgia. The AM dial sounded fantastic. I was alll local ; all friendly ; all interesting ; all unique.
And once you GOT to Florida, there was the same grand display ; the same broadcast magic that inspired so many to enter the industry. Each station seemed to have a reason for being there, and they earned their local and regional revenue and acclaim. (Florida AM radio in that era, arguably, was some of the best entertainment ever programmed).
* * * * * * *
Those times were over forty years ago. The progess along the impatient I-95's of the country helped wreck the hamlets along the U.S. 301's and U.S. 17's of the country.
And now you arrive in Florida and find nothing but syndicated sports, Hannity and religion on the AM dial -- same as everywhere else.
In this section of the country, as a glaring example, there is no more farm system for modern pop music on AM or FM. As singer Joni Mitchell wrote -- she just turned 70 yesterday -- 'they paved paradise and put up a parking lot'.
She wrote that in 1970. She must've seen some over-corporate problems starting to emerge at that same time.
Youth is where all generations who now enjoy nostalgia originated -- for decades and decades. But why should a youth in Spring Lake NC or Hopewell Virginia or Quakake Pennsylvania even listen to the radio nowadays, never mind the AM dial?
There are no reasons to listen. The 60-year old talkers are out of touch. There is no music. The jingles are over-processed dreck. The signals are lousy. The commercials are non-stop and all sound the same.
The next generation of talkers are not going to emerge among such neglect.