Why cooperators always win in the long run
phys.org
phys.org
http://en.wikipedia.org/wiki/Mutual_Aid:_A_Factor_of_Evoluti... (1902)
http://en.wikipedia.org/wiki/The_Evolution_of_Cooperation (1981)
But yes, it's not radically new idea. In cash game poker (in situations where you that much better than your opponent), you don't necessary want to win a regular's money consistently all the time. Better to keep your customer returning by showing some vulnerability.
In fact, I wonder if they allowed for any "market" distorting (whatever that is in context) actions to take place, or if that was to complex.