It depends on what you mean by a living. True, Drake makles six figures, but it is very low six figures. To me, that is not a good living. I make far more money than Drake and have time to actually enjoy RC racing. I would never trade my life for Drake's.
Plus there are so few who make anywhere near that racing RC cas. If you want to make money at some sport, then race motocross or street bikes. Or play basketball or something. RC is too small of a thing.
Or better yet, get a really good education and make money using your intellect.