MSCI World Index is much worse for historical performance compared to S&P 500. I would guess that half the profits of companies in the S&P 500 are internationa

MSCI World Index is much worse for historical performance compared to S&P 500. I would guess that half the profits of companies in the S&P 500 are international. There is little need to directly own companies in developing economies, when you can own their safer counterparts from developed countries that do a lot of investing in developing economies. This is probably true in the US, Europe, and Japan.