Everything broadcast is dying. Many big AM stations have moved to FM, but there wouldn't have been anywhere for them to move to 30 years ago as FM licenses in major markets were a premium. WIP and KYW on FM in the 80's? No way. Sure, nowadays everyone is streaming their stuff........but wait- now everyone with a decent internet audience is trying to establish premium memberships, Patreon's, Mighty Networks, etc., etc., etc. as the content platforms are making money hand over fist, but not sp much for many content creators. I doubt "free" quality online content is going to last forever, either. Personally, I find radio ads way less annoying than internet ads. Who knows where this all will land but I still think the market will correct itself. I mean, if I told you 20 years ago kids would be buying music on vinyl, you would have laughed me off this site. Anyway, here is an interesting article about some solutions to address the challenges of AM transmitter sites:
AM Stations Have New Options. Ya know someone, somewhere is lobbying for the return of CONELRAD.