Sure, but that's sad. Q: Why not get everybody involved with #1-#5? A: Because that's more effort for management, and they'd have to trust their staff. (Sometimes it depends on how well you go about this, aka. soft skills, but often there's no way to sell it other than get involved with company politics for 2+ years)

I'd also argue that at large companies, getting stuff shipped isn't usually the hardest part, not stagnating is. "How could we do things better" can be a pretty huge and valuable question in large places.