They let us borrow some so that we can buy their products and pay them back more. We have to trade our labor to make up the difference between our passive income and current expenses, but they’ll only give us just enough to sustain a population of laborers.

Some take a risk and borrow wayyyy more than they can really pay back with their own labor and use that money to buy assets that they hope will be successful in integrating with the loop of money. If it’s successful, their assets buy the labor of others to generate income so they pay back the loan and do it all over again.