Enderby-Browne
I think it's you who is being a little naïve.
What is the difference between "for Airbus'/Boeing's sake" and for safety's sake?
How long do you think a company in this business would last if it got a reputation for doing less than maximum to ensure the safety of its planes? Product liability lawyers would descend on them like locusts and devour everything.
The company could spend 30 years building a business and reputation only to lose it, with all the customers, overnight. Bankrupt. No chief executive could risk it.