Is the reason people behave badly-- I don't know "Badly"--people choose Alpha in this game here, is it the fact that they can't communicate?

人们之所以取得糟糕的结果,我不敢说结果是不是真的不好,但人们选α是因为不能交流吗

耶鲁公开课 - 博弈论课程节选