It is important to people do things whichever areas they are interesting. Everybody knows many problems around us, but nobody cares until it is a priority or if they are not interested.

So, let him do what he is doing, he is doing everything right, now if you are communicating with people through mobile phones is just because of satellites, that happened only because people explored the space and it's application.

So, the final goal of Elon is great, support people so that you will also get good support when you have a great idea.