not until they can successfully, secretly, launder money and hide money in shell companies and other fraudulent activities that a very large portion of the money flow in the world relies on.

Also. at a level above "money" what do the ultra wealthy (Rothschild, Rockefeller, etc) deal in as currency at their level. I believe they have another currency. These families have FAR greater wealth than Bezos and Zuck (Bill Gates is essentially family to the Rothschilds. through his father/grandfather)