There is another threat when things go wrong (and they eventually always do) - no matter how horrible some dictator is, eventually he/she will die, and at some

There is another threat when things go wrong (and they eventually always do) - no matter how horrible some dictator is, eventually he/she will die, and at some point things get reshuffled by war/revolution/some other more peaceful means. With AI, it would try its best to preserve/enhance/spread itself forever. And its best might be much better than our best...