Assembly line mentality- management
eengr is correcte when he describes how things work.
Boeing is typical - I know- been there- done that as an engineer.
While things generally have improved in some areas over a few decades, there are still way too many bean counters and power point rangers that drive the bus.
Its the ' when we want your opinion- we will tell you what it is " or ' I want A way to do it - cannot afford the time or $$ to ' do it better"
even so- most of the workers are dedicated and try to do the right thing, but ultimately it still comes down to self preservation.
The better- experienced workers that make it to AOG crews are absolute wizards and VERY dedicated. But they cost a bit- and are retireing at a significant rate.