USA: 5% of world population with 50% of global market cap ?

[Delawaredave]

I continue to be amazed that the USA can have 5% of the world's population, use 25% of the world's energy, and have 50% of the world's stock market capitalization.

Does this mean anything towards long term asset allocation strategies ?

With globalization accelerating, I just gotta believe the US proportion will decrease (and/or global portion will grow faster).

Or maybe the US always was this dominant proportion and will continue to be so..

And maybe the proportion doesn't matter or correlate with the return on that capitalization.