That system is called capitalism, and it doesn't just benefit people like Elon Musk.
Anybody can be a capitalist. Most aren't simply because they don't try. They spend all the money they earn and then some. They spend it on stuff that's not an asset, like a car, a family, drugs (cigarettes, alcohol, coffee) or a social life. Then when an opportunity comes up to
multiply their investment by 34,000%, they don't have anything to invest. Or they spend it on the lottery instead.
You know that many of Tesla's workers are also stockholders, right? Then again, maybe Musk will screw it up and Tesla goes bankrupt. Then he gets nothing and neither do the other stockholders. The workers will get their final paychecks though.
Actually Musk gets nothing even if Telsa does OK. He only gets compensation for
exceptional performance. Many are saying it won't happen, and they may be right. I bet you don't think this is unfair though.