Greed

Rating: 10/10 (23 November 2015)

The only thing I have to say, which is contrary to other people, is that this story isn't about oil, or madness; it's a story about greed, and it's not the main character who is greedy... it's the others.
The main character works hard to earn money, and is forced to take any action possible to achieve his goals. He's cunning, and manipulative. But one thing he's not, and that is a parasite. It would seem that everyone else in the movie is either a moocher, or so stupid that they deserve to be in poverty.
Some people think the main character is a psychopath, but by definition a psychopath is charming, and a parasite, which doesn't apply to him. The main character also shows concern for other people from time to time, thus he only wants to see his opponents fail, not everyone. And when his son wanted to become his competitor, he let him know the truth, just to hurt him. The only true psychopath in the movie is the pastor, who uses religion to feed his social status.
So ironically, everyone says the main character is greedy, but he only negotiated his way to success, in addition to working very hard for it. The people who are truly greedy are the ones that tried to socially manipulate him into submission.