https://www.youtube.com/watch?v=wjkdynBFHuQ and actually, I've always, always loved this scene since I was a kid: https://www.youtube.com/watch?v=RLySXTIBS3c - takes some thinking to learn how the markets were cornered and how they made all that money shorting OJ commodities.

But your point here is well taken - are these rich folks placing bets and toying with poor folks? Hmm.