Rome is a good template to visualize the process of social COLLAPSE in response to a "polycrisis". Particularly if you view it from this perspective.

The Fate of Rome: Climate, Disease, and the End of an Empire. (Kyle Harper 2017)

The position of the 1% is straightforward.

Even if Climate Change caused the population of Europe and the Mediterranean Basin to decline 50% and the Central Government to collapse.

BUSINESS AND TRADE NEVER STOPPED.