This is a long running thread that surfaces on a regular basis. let em see if I can summarize
The 50kw blow torches still have a commanding market share in the major cities. While they may have an FM simulcast, their AM signal is not going to go away.
If an Ancient Modulation station can cover 100% of its metro clearly, 24 hours a day (read: 5 to 50 kW, depending on the size of the metro and dial position, and a non-directional antenna), it has a better chance of surviving. Few can do that. The metro areas got bigger, while station coverage did not.
Nor is the AM band about to be regulated out of existence.
It may fall into relative disuse, but the Medium Wave broadcast band ain't goin' nowhere. For starters, it would take an act of the ITU to do this. Plus the fact that frequencies below 88 MHz, let alone 1.7 MHz, have little-to-no commercial value anymore (we're seeing what a disaster DTV is at low-VHF). The only folks that would want it would be hams - and we'll take anything that's available.
Lower power stations will be killed by the increase in noise caused by power lines, computers, light bulbs, etc. And that is not counting the AM IBOC (which is also considered to be dead or dying).
That's been the case ever since TVs with their horizontal sweep oscillators' harmonics became common in the 1950s. New devices just make matters even worse.
Music is dead on AM except for ethnic, oldies, and MOYL and the occasional format dump.
Music sounds lousy on AM, other than pre-1975 oldies that were designed to be played on cheap record players and AM radios. FM took rock away from AM starting in the late '60s. Jazz, classical, and elevator music (the mainstays of pre-'70s FM) never sounded good on AM.
Any other from previous threads that I have missed?
Yes. Nobody younger than 50 listens to AM other than for sports. Nobody listens to AM at night other than for games - and even that's going away since the four major leagues (MLB, NFL, NBA, NHL) stream all their games with no blackouts. The NBA and NHL are free, and the others are cheap. College sports, on the other hand, is still
being gouged by CBS