Imagine a thousand employees, half your HQ staff, that leave. There are several possible reasons:
- they're older -> more corporate knowledge and knew the "magic recipes"
- skill based mobility -> they're so good they can go anywhere, and Chicago isn't Seattle
- etc
https://hbr.org/2001/10/inside-boeings-big-move
This was widely thought on ... what was I browsing back then? Reddit? as a fore-warner of bad stuff to come
The fore-warning came to fruition when the issues at various Boeing plants started developing over the next ten years (insider videos talking with an employee about being on drugs during crucial assembly work and shift mates being similarly high, "get it through your station" attitudes) and the Dreamliner issues that were hand-waved away (no training, 1-hour tablet self directed training, certification delays, and eventually crashes).