Like topics from Predictably Irrational, Irrational Exuberance, The Winner’s Curse, Moral Mazes, Thinking Fast and Slow, countless articles on LessWrong sequence on cognitive biases and heuristics, research on Last Place aversion, etc.?
Your comment seems to presume a textbook definition of rational self interest actually describes the behavior of living organisms, but it profoundly does not.