Part of the problem is the asymmetry between defined concentrated harm and diffuse hard to quantity loosely spread harm.
It's easy to quantify the harm of any specific failure. It's hard to quantify the harm of incentivizing people who can fly by the seat of their pants (metaphorically and literally) and generally succeed out of an industry and incentivizing button pushers, checklist runners and spreadsheet fillers into an industry. Say nothing of the fact that a bureaucracy built of these people has every incentive not to study it and to find in their own favor if they ever do.
It's easy to quantify the harm of any specific failure. It's hard to quantify the harm of incentivizing people who can fly by the seat of their pants (metaphorically and literally) and generally succeed out of an industry and incentivizing button pushers, checklist runners and spreadsheet fillers into an industry. Say nothing of the fact that a bureaucracy built of these people has every incentive not to study it and to find in their own favor if they ever do.