@lil host,
The powerful rule the world, and while the powerful who do, usually become quite rich, wealth isn't a requirement for power.
Vladimir Lenin, Mao Tse Tung, Fidel Castro, Adolph Hitler, etc etc etc, were not rich when they came to hold extreme degrees of power.
Quite a few men of relatively modest means have occupied what has, for the last 100 years or so, been the most powerful position on earth. That many of them left a whole lot wealthier then when they arrived is more a reflection of the fruits of power rather than the prerequisites.
The people who rule the world are those driven to do so; most for a lust for power. Wealth is rarely the price of admission into the club.