I would hazard a guess that a lot of the so-called wealth is not actual, directly owned material wealth, but immaterial numbers: indirect, abstract proof of ownership — in Baudrillard jargon, simulacra of ownership. Numbers, which, due to their illiquid nature and their disconnect from material ownership, cannot be instantly and fully redeemed without sacrificing most of their purported value.
We haven’t stopped extracting materials or producing goods. In fact, there are about 7 billion more people now than in 1800, dawn of the industrial age. We are hundreds if not thousands of times more productive in terms of work than in the pre-industrial age.
However, most of our so-called ownership begins in a fiat currency that is essentially a company token.