Do they? Not even governments do that – instead, they manage billions of people and trillions of dollar by having a hierarchical structure, instead of using a long legislative process for every decision.
Why do you think those two things are impossible to do at the same time. Most companies also have hierarchical structures, and most governments use some kind of bureaucratic process to approve major new projects, I'd expect it to be more bureaucratic than at most businesses.
But that’s even not the case, that’s the point. Most governments let their government agencies just do things, without unreasonable bureaucracies like these.
Everything I'm familiar with has approval and review on everything in government, bureaucracy is synonymous with government to many people for exactly this reason.