One can present these two systems as equal alternatives but there is a very big difference. The system with the rule of law leads to much more prosperous societies than the tribal one. Corruption is economically extremely expensive. Like, one it really gets going, it can easily decrease GDP by a factor of 10. The same with dictatorships. As long as the dictator makes somewhat reasonable decisions it is more or less okay but any dictatorship is only a few bad decisions away from becoming much poorer. And when it depends on the good judgement of a single person these bad decisions are certainly going to come.