It's also the idea in many safety engineering orgs around how to mechanistically prevent something from happening again even though someone still might try to do the same thing again. In other words, blaming people for mistakes or fraud won't fix the problem since people make mistakes and commit fraud so it will simply happen again. Organizations and governments need to block those mistakes and fraudulent actors from being able to have the impact again that they had previously and we're trying to avoid.

That doesn't mean the person at fault can't also be blamed and punished as a warning to others (i.e. one more mechanism to prevent recurrence).