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Investing/business with other people's money: How does it work?
Basically, you either borrow money, or get other people to invest in your business by buying stock or something analogous.  Sometimes you can get people to "park" money with you. For example, many people deposit money in a bank checking account. They don't get any interest or other profit from this, they just do it because the bank is a convenient place to store their money. The bank then loans some percentage of this money out and keeps the interest. I don't doubt that people have come up with more clever ways to use other people's money. Borrowing money for an investment or business venture is risky because if you lose money, you may be unable to pay it back. On the other hand, investors expect a share of the profit, not just a fixed interest rate.