Private contractors

I will take up the idea of corporate responsibilities in a later post, but I wanted to pose the following for discussion.

CIA Chief Michael Hayden confirmed this week the use of private contractors in the interrogation of 3 waterboarded detainees.

Now, Milton Friedman famously argued in a NY Times column that corporations have no social responsibility but to increase their profits; many others have avowed this position. Is it an implication of this view that those private corporations involved in waterboarding bear no responsibility? They were just doing what they should, increasing their profits?

Is this what Hannah Arendt meant by the banality of evil?