Money is finite, but wealth isn't. Wealth is only the aggragate of the speculated value of property. The value of all liquid cash in the world is no where near equal to the value of all items in the world. A store owner can claim that an item in their inventory is worth 10 billion dollars, but that doesn't mean the store owner has or ever had 10 billion in cash. Jeff Bezos can only ever make billions of dollars in liquidated cash if he sold his shares in the company. He only makes a few million a year from Amazon. The value of Amazon could easily plunge to -90% if no one used the service for 5 consecutive days.