Yes, this -- don't think that just because a big company throws words and money around that they are going to change. There can be many in middle management who either don't want change;or are too set in their ways and unwilling to learn what it takes to change ;or are simply too incompetent to change. Look at Yahoo.
I agree with you, actually. I've seen before that upper management can be shown the advantages quickly, and folks at the coal face can be shown the advantages quickly.
People in the middle, whose reckoning includes career prospects and health insurance and worrying about mortgages and where their kids will go to school, tend to lean towards the "never take a risk ever" school of thought.
And a lot of corporate cultures are built on punishment and reward, distributed veto powers and a fondness for finding a neck whenever something goes wrong.