A lighthouse and national defense are examples of [[public good]]s. The market would not provide those goods as it would be unable to charge a price to all users/consumers. It would be both unprofitable and impractical to attempt to do so. They suffer from what is known as the '''free rider''' problem. | A lighthouse and national defense are examples of [[public good]]s. The market would not provide those goods as it would be unable to charge a price to all users/consumers. It would be both unprofitable and impractical to attempt to do so. They suffer from what is known as the '''free rider''' problem. |