The same food they are forced to slave away to produce. Are you fucking stupid? Poor people are literally the foundation of your society not some executive flying around to talk to clients. Literally fuck off. IT has access to security controls in an org. Accountants can access funds if they need as they have the rights. Billionaires add nothing of value to this society nor to its functioning. The driver who delivers your produce, the farmer who produces it, the factory worker who packages it, the restaurant employees who cook and serve you, the gas station clerk who turns your pump on and off, the grocery store workers, the municipality workers managing waste water and electrical infrastructure, all the jobs foundational to a society are not done from billionaires and seeing the rich gone tomorrow would not change that instead it would release a burden and allow progress. Honestly it takes just a miniscule of common sense to understand this, which shows how disconnected and stupid the billionaire class and those who defend it are.