However, as a phenomenon that is widespread throughout the industry and not merely an individual (mis)behavior, the greed or rather the possibility of individual functionaries to enforce their personal pursuit of profit at the expense of third parties or the organization would have to be explained from a general framework, i.e. sociologically.
Even beyond the question of whether and to what extent the "wisdom" or, conversely, the dysfunctionality of the market can be understood at all as an expression of individual decisions, it would at least have to be clarified why, more or less simultaneously, very many influential actors are said to have become so greedy that they were able to drive the market into collapse.
But this reverses the question: greed is not the explanans of the crisis, but rather another explanandum of Financial Market Capitalism. And according to recent studies, speculation on financial markets (which as such is neither economically nor morally reprehensible) is an activity that both generates and presupposes greed; the financial market is a disposition that itself generates the typical and perhaps also necessary psychological dispositions of its actors.
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Axel T. Paul, Die Gesellschaft des Geldes: Entwurf einer monetären Theorie der Moderne, 2., erw. Aufl (Wiesbaden: Springer VS, 2012), p. 12
Greed is a dice game played between two or more players. The object of the game is to tally points from the dice rolls and be the first player to score 5000 points. There are five dice in the game that are rolled from a cup.