[phs318u]

True, but the excess of their riches is matched only by the profligacy of their spending and protected by the USA. Once the oil is gone or irrelevant they lose the protection of America, and become merely a bunch of rich oligarchs. Some will manage it well, most wont.

EDIT: Forgot to add that their geopolitical power doesn’t come from their money but from their control of a global resource. If the unfortunate deaths of various Russian expat oligarchs has proven anything, it’s that no amount of money can buy you protection from a tier-1 state that wants you dead.