When the French and English "Empires" 'fell,' French and English ruling classes still did just fine. And for that matter, England and France, if you avoid thinking in terms of some game, are from the point of viewof their ruling classes doing just fine.
So is the U.S. ruling class.
So are the new ruling classes of Russia and China,, and the latter is quite happym, apparently, to provide cheap labor for U.S. corporations,.
It is really detached from reality to speak of the "fall" of modern empires or of the "decadence" of capitalism. The organic metaphor of decadence was relevant only to empires based on coercion-grounded exploitation. It has no relevance to capitalism, which is endlessly self-renewing through the very ccatastrophes that tempt weak-minded anti-capitalists to shout hurrah, capitalism is falling.
Carrol