Wall Street and steroids

There is a parallel between steroids in baseball and Wall Street. Baseball players took steroids because their peers did and they wanted to be able to compete. Wall Street analysts took extreme risks because their peers did to and they wanted to be able to compete.

Now here is the difference. Baseball woke up and said no more steroids and we will begin testing. Wall Street gets more money (their steroid) and still little or no testing. You don't reward bad behavior. What is the incentive for Wall Street to not do this again when our government is the pusher. Is this so hard to see?