Banks don’t control their regulators, politics through government does.
Banks only play the game that is set for them. Their influences are local and specific.
IMO, the ethics that created the banking, investment and real-estate issues were created by people who believed and still believe that they were acting ethically.
The banks cannot be held ethically or morally responsible for playing inside the game board the was created for them. It’s a competitive environment.
Yet they are and will continue to be held responsible.
As the government now extracts their fines and reciprocities from the banks for doing something the government essentially asked them through regulation to do, the American banking customer will pay for every dollar they extract, in one way or another.
Your comment is, by far, the most accurate of this thread in regard to how the banks are affected and of the immediate influences.