In most of these cases, they have already learned from their mistakes because they commited so much fraud in the past but never got caught.    They have learned that it is easier to ask forgiveness than permission.   Some will justify their crimes, calling it "fiduciary duty" but they all eventually get caught.   They are greedy and they always want more - and they brag about their booty online.   

Don't expect career thieves to learn from their mistakes the same way an honest person would, or even admit it was a mistake.