This is a very good place to pay attention to the difference between free markets and capitalism though. Compound interest scales exponentially because people c

This is a very good place to pay attention to the difference between free markets and capitalism though. Compound interest scales exponentially because people can buy stock that gives them a stake in a company's profits in perpetuity, or rental properties that do the same. It's possible to imagine making it illegal to own private property (illegal to own things that are primarily for other people to use), while still having a market system for what's still allowed to be bought and sold (personal property).