There was a very very powerful Mafia figure. One of his scams involved gasoline prices. I think this was back in the 80s. He was so successful at it, that the Mafia bosses became jealous. He knew that he was being targeted for death, because they wanted to steal his business. In one of the most unusual incidents in the history of the Mob, they actually let him buy his way out of the Mafia. If I remember the figure, I think he made something like $15 million dollars just on the gasoline scam.
And, the thing is...the Mafia has nothing on OPEC and America's oil millionaires/ billionaires. They make the Mafia look like small potatoes.