No, not really. I'm trying to understand why Right Wing programming is so prevalent (and apparently viable) on the AM band, particularly here in the Atlanta area. WSB with their clear channel frequency dominates the band, yet management decided that they also needed an FM frequency to simulcast their broadcast. Was this simulcast move made due to a reduction of the number of listeners to the AM station?
I was one of the listeners who preferred the FM band, for music, because it was stereo and a perceived higher quality.
Had the FCC standardized on AM Stereo and allowed the transmitted audio bandwidth to be 15 kHz, then perhaps the situation might have been a little different.
Is your concern the "prevalence" of right-wing talk radio, or the displacement of FM music stations by spoken-word formats--not just 95.5, but also 92.9, as well as the translators for 680 and 1230?
Doing a back-of-the-envelope rundown, I see the following players in talk radio on both bands in Atlanta (not including religious programming, which is nothing new on AM, and not including non-English stations):
WSB 750/95.5: Erick Erickson is definitely right-of-center, but I wouldn't consider him extreme. Eric von Haessler and Mark Arum play to a more general audience.
WABE 90.1: NPR, definitely not right-wing
WRAS 88.5: ditto
WBIN 640: not right-wing. Class B.
WFOM 1230/106.3 definitely right wing. Class C + translator.
WDUN 550 Class B, out of Gainesville.
WGKA 920 moderate right wing. Class B.
WAOK 1380: not right wing. Class B
WMLB 1690: definitely right-wing. Class B
So on the not-right-wing side, we have two full-power noncom FMs (a class C0 and a class C1), a 50kW day/1000W night AM class B, a 25kW day/4200W night AM class B.
That's 4 viable signals, 2 full-power FMs, 2 class B AMs (one full power day).
On the right-wing side, we have a class A clear channel 50kW AM that simulcasts with a class C1 full-power FM, a 10kW day/2500W night AM class B that is on the edge of the market, a class C local-channel AM that simulcasts on a translator, a 14kW class B AM, and a 10kW x-band class B AM.
That's 7 viable signals (if you count the two FM sides separately). Of those, there are 3 not-full-power class Bs, a class C, an FM translator (which simulcasts the class C), and WSB + WSBB. 5 AMs and 2 FMs (including a translator).
If I were to rank the signal quality, WSB+WSBB definitely has the best signal of the bunch. But after that, then you have the two noncom FMs, and then probably a tie between 550, 640, and 920 (YMMV). Then 1380, then 1690, and the two WFOM signals taking up the rear.
If you set WSB+WSBB aside, the not-right-wing talkers have the three best signals. And the three worst signals are right-wing.
Of course, this is all driven by listenership (or, rather, advertisers' perception of listenership in the case of commercial stations), not any one person's preferences. No listeners=no station.
Much music listenership has gone online, where it is easier to narrowcast and also field niche formats. The music formats on radio tend to be geared to people who may not have or can afford a phone with unlimited data, or LWYW, or broad-appeal formats. And spoken word (talk and sports) appeal to these kinds of listeners as well.
There was a bunch of wailing and gnashing of teeth when the FCC basically punted on setting a standard for AM stereo, thinking that caused AM stereo to fail in the marketplace. Even so, both Steely Dan and TheBigA are right--the biggest problem with AM is static and noise, not monaural or bandwidth.
AM's ace in the hole is really skywave night coverage, and that doesn't help anyone below a class A or a big-at-night class B. And in the ever-noisier AM band (from interference from class Ds running at flea power as well as all manner of RFI from modern electronics), skywave AM isn't great for music, either. Nobody is trying to DX XERF and Wolfman Jack to hear records they couldn't hear locally anymore.
Many electric cars like Teslas are so rife with RFI that they don't even bother putting in an AM radio anymore.