Maybe they should also have bought all of the surrounding land within sight in every direction. I moved to a remote rural area very particularly because of the dark skies, for my joy of it and an astronomy hobby. A decade later they built a large wind farm a few miles away, with blinking red lights on top of each turbine. It sucks and there's not a damn thing I can do about it other than leave.
Yeah, real estate development is sort of like traffic.
People develop some land / drive somewhere, and then get irrationally upset that others do the same.