That gets into the same issue as cell service. Range is limited. I'm 13 miles from a cell tower. 15 miles from a water tower, and 30 miles from any tall structure other than those. Antennas placed on those types of things have limited range. The Wisp provider in the area won't install much beyond 5 miles. I am able to get cell service in the house with a roof antenna, and I can literally see that tower that is 13 miles away.
Population density where I am is about 2 people per square mile. My neighbors are over a mile away, many are much farther apart than that.