At this scale though, you need service isolation just to operate with any efficacy. Think how much worse this case would be if those two rank and file developer

At this scale though, you need service isolation just to operate with any efficacy. Think how much worse this case would be if those two rank and file developers under distant VP hierarchies were deploying the same codebase to the same production machines. Basically it would be impossible to ship without independent QA and Ops arms with heavy policy on what is required to deploy anything. Now you're moving at about 1% of the speed of a Facebook or Amazon.