AM radio doesn't consume very much of the radio spectrum but I wonder how much longer it is going to keep going. When I lived in California in the 90s, I'd often listen to whatever KFI was playing while driving up and down the coast multiple times a week. If I lived there today, I'd probably end up listening to audiobooks or podcasts rather than terrestrial radio. Wonder how much the market for AM can shrink before it can't cover the bills.