I only know second hand what's happening at boeing, specifically, I know someone who was in charge of their IT infra there, at one of the parts manufacturing facilities. They frequently were given a project to spec out and then implement, and the management never asked how much anything would cost and early in their time there, when it was brought up, it was handwaved off as not important. Their direct management later told them that they don't have a budget for -anything- and to not worry about it.

Now, that may just have been the case for IT infra, but, their impression was that at very least their facility had a blank check and costs didn't really matter.

Ironically, they left after getting a promotion while stiffing them on a raise. That, understandably, didn't sit well with them in the light of the rest of the situation.