I have worked in Finance for 25 years, and the amount of pressure I had to stand from Auditing on "Why do we have a 20-day-window on applying most updates as we get them from suppliers? We are not best practice!" is gruelling.
These people report to the Board Chairman, don't understand any real implication of their work, and believe the world is a simplistic Red - Amber - Green grid.
I understand most CIOs / CTOs / CISOs in Corporate would buckle.
It's actually worse than phone updates. Ever looked at your phone and noticed it hasn't updated to the new OS despite it having been out for a few days already? This is why.
Yeah, this is what surprises me. Corporate infrastructure policy seems to have been matched to smart phone default settings.