This is one issue that breaks my heart more than almost any other. I never saw a truly dark sky or the milky way until I was in my early 30s. Now I take regular road trips out west to experience it.
People are so oblivious to light pollution. They don't realize how absurdly bright our lights are and how little they're actually needed. At minimum, they shouldn't be lighting the undersides of airplanes.
I didn't know what else I could do about this, so I inserted a light pollution level in my indie game. You have to replace these hideously bright outdoor lamps with full cutoff fixtures to gradually get the stars back. I wish there was more I could do.
The problem has to be educational. If the public valued the night sky, they would be amenable to fixing it. But how do you accomplish that if you're not any good at marketing or communicating?