I don't think it's going to be military killing a
Americans. As of now it more looks like federal government.
Nevertheless, sure, in the rural areas, but less so in the cities, reflections and bending of the waves make it much harder, and a single repeater with solar panel and battery could plausibly be made under $50.
They are being made. I have a four node network already in my suburb. There is a software project that is written in Python that essentially turns lorawan nodes into BBSs similar to briar.
Nevertheless, sure, in the rural areas, but less so in the cities, reflections and bending of the waves make it much harder, and a single repeater with solar panel and battery could plausibly be made under $50.