> Because you can't do the Nazi Germany thing these days. I mean... disgust aside, it kinda failed.

It failed because Nazi Germany was not militarily superior to combination of the nations that it got upset with it externally, not because of any internal failure of control. While its nice to think that Nazi Germany “failing” somehow disproves the viability of the same broad kind of one-party, massacre-the-opposition totalitarianism, it isn't really justified.