Bankers and good and evil

If the bankers are the "villains" of the society because they are making money from others wrong financial bets (i.e. decisions), imagine a doctor making money from others' wrong physical bets or a cleaning service staff making money from others' poor behavior, and so on. 

Bankers don't care to be morally judged because their honesty, contrary to society's views about them, is socially naked and unsophisticated. A doctor's dishonesty is socially complex and their self-made ethics is injected to and deeply blended with our mental blood vessels. 

There is no right and wrong, THAT can not be critically re-evaluated, and its necessity not be reconsidered, and its structure not be reconstructed.