It is sad but true that most people believe that free markets represent a zero sum game. Winners only win to the extent that other people lose. In reality, nothing could be further from the truth. In a free market, entrepreneurs win by creating new goods and services, thereby making society richer. Moreover, entrepreneurs typically retain only a fraction–around 2%–of the added value they create.
In the video below, John Stossel discusses these and other widely believed myths about capitalism.