There are closet dissidents in the financial industry, according to a piece in Dealbook:
The critics are more often found on the periphery, running hedge funds or working at independent research shops. They are retired, either voluntarily or not. They are low-level executives who haven’t made scrambling up the corporate hierarchy their sole ambition in life. Perhaps their independent status removes the intellectual handcuffs that come with ungodly bonuses. Or perhaps they are able to see Big Money’s flaws because they have to compete with the bigger banks for dollars.
Some of them are even going back to graduate school. Hypothetically speaking, of course.