When talking about “government inefficiency” I am always brought back to my college control theory classes. In control theory you learn that for a system to be stable, you must decrease performance. Likewise if you want a performance system, you have to narrow the conditions in which it will be stable (race car needs dedicated track). Government is intended to be more stable so if the control theory model fits, government is not going to be as efficient but it is also a lot less likely to fail when disturbances vary or increase.
h/t Jon Henke