When I originally proposed this, I was told that, no, everyone in the financial industry was under pressures which made their behavior inevitable. On the other hand, the pressures were the result of policies and choices which were a matter of individual judgment.

Sounds a little like the horror stories about junior doctors taking heaven-knows-what (probably sneaking prescribed stimulants out of their own pharmacies) in order to survive *their* horrendous workweeks and long shifts. And if it can happen in hospitals, there is certainly no reason why it shouldn't also hold true (and have held true) on the trading floors.