At which point a monarchy makes sense.
Dictatorships are unstable. They tie the fate of an immortal nation to the mortal whims and needs of a man. We came up with monarchy as a solution to this problem, and then swept it away when the modern republic was invented.
But republics aren't for everyone. Democracy requires compromise, and staring the uncertain and unknowable honestly in the eye. It may be high time that we admit that some populations prefer the certainty of autocracy. And within the domain of autocracy, the time-tested model is heridatory constitutional monarchy.