In my experience of similar corporate ignorance:
A company used to (they don’t now) evaluate air accident insurance pay-outs against the cost of reviewing system effectiveness for modification…it took several accidents with fatalities (totalling hundreds) to motivate the national authority to mandate the changes required to stop the accidents. The company had not yet reached its internal mandate…but, for fear of imposed fleet-wide actions, felt encouraged to comply with the NAA’s instruction and changed the errant system.
A friend of mine theorises the MOD’s corporate responsibility thus:
It took many cases over many years and several dozen millions in compensation payments, in increasing amounts of money to more and more personnel, for the illegal ejection from the Armed Services of pregnant girls and of those wearing comfortable shoes, to gain some sort of recognition in the higher echelons and some action to review what was causing those cases and the loss of money…
Just think of how much longer, how much money and how many other cases to challenge the institutionalised arrogance/ignorance it will take to change the current attitudes to airworthiness?