How long do communication satellites last, and once they are out of power what happens to them? Are they moved into junk orbit, and if so is that a preprogrammed action or initiated from some sort of ground control. Or do they fall to earth/burn up. Is 100 years in orbit reasonable to assume - just orbit, not necessarily powered. Could a satellite maintain orbit for that long? What facilities can launch communication satellites? Can it be done in a non-government facility? Could an amateur radio satellite be launched privately somewhere/somehow, and if so, what would be needed to do that?
Thank you for your expert time.