An ineluctable feature of our economic landscape, characterized as it is by what I have termed “monetary mercantilism”, is that wealth will grow increasingly concentrated. This means that the rest of us will have to fight harder for the scraps. This makes people mean, cynical, scheming, dishonest, and emotionally cold and violent. Leftists then look at this outcome, and condemn free markets, when it is precisely the LACK of free markets–true capitalism–in the banking sector that got us here.
We see this theme of fighting to be top dog constantly in American culture. Think Highlander, or Survivor, or American Idol. The Hunger Games is simply a logical extension of this dynamic, applied to literal survival.