didn't find it on instagram but here is an article with the same headline but it's from 2023 https://www.economist.com/finance-and-economics/2023/10/30/what-a-third-world-war-would-mean-for-investors and behind a pay wall
You're giving them far too much credit. While these people like to think of themselves as super-geniuses, they can't think any farther than the tips of their noses. Their plan is to hole up on their private islands when shit hits the fan. They can't imagine that they'll be the first to be eaten when food runs low.