That's what Gregg Easterbrook is observing:
Dictatorship is under siege throughout the Arab world: fingers are crossed that democracy will prevail. Something else is under siege, too the notion of family rule. This is among the oldest, and most harmful, concepts in human society. Is it about to vanish at last? For centuries, in some cases for millennia, regions and nations have been ruled by families either formally as royalty, or de facto via warlords, khans and shoguns who in most cases inherited their positions. As recently as a century ago, families still ran most of Europe, all of Russia and Japan, while an assortment of warlord-like figures with inherited standing ran much of what’s now South America and the Middle East, and kings and emperors controlled the subcontinent and most of Africa.
Today family rule has been vanquished, or reduced to constitutional status, in most of the world. The big exceptions are Cuba, North Korea, the Middle East, and parts of Africa and Pakistan. The fall of Hosni Mubarak in Egypt, following a 30-year warlord-style rule and the unlikelihood that his sons will inherit control of the country, as Mubarak planned represents a major subtraction from the remaining portion of the globe under family control.
It's easy to second his conclusion: "Let's hope the trend continues."