"become super wealthy because of his business skills"

Bill Gates saw the potential in the industry before it exploded, which is why he is considered skilled in business. This is pretty much the same with most super-successful business people.

I really don't like this attitude that success is mainly due to the luck of the draw. Sure there is luck, but it's the same luck involved in pretty much everything you do in life (you're lucky you didn't get hit by a car when you crossed the street), which makes it a moot point.