I'm amazed he got any jail time at all. Look back at the 2008 financial crisis. The crisis was riddled with fraud, and yet the executives from many of those banks that caused the crisis left with multi-million dollar bonuses and zero jail time.
Why is it so hard to imagine someone doing this without direct order? Why do we assume the "executive" is evil, but the lowly worker is "good"?
The lowly worker, meanwhile, has failed to rise in the ranks and is therefore less likely to be evil than the population average since some of the evil people (but proportionately fewer not-evil people) have moved out of his or her cohort (to higher-paying positions).
QED.
Can you point to the actual crimes or specific cases? Because, fortunately, we don't throw people in jail on speculation.