Does that include licensing of the frequency or just the infrastructure? Even if it includes some duration of the license, I expect there are still regulations and red tape to maintain that license. And regulations about what you can broadcast.
And even low-power AM transmission stations need an annoying amount of physical plant maintenance—cutting grass, trimming overgrowth, fixing all the random annoying issues that crop up when maintaining any kind of equipment at a remote site (theft, rodents, water ingress, cooling, power, comms, etc.).