"People being happy is a good business model."<br><br>Wrong. When people are already happy, they don't buy anything. Healthy people aren't profitable patients, sick people are. Unhappy people have to consume more and more to be happy. The doctors that "cure" their patients, don't have repeat patients.<br><br>Look at the business model of tobacco, or anything that gives immediate gratification and which becomes addictive. Those are the best business models, from the perspective of maximizing your own profits.<br><br>Ideally, your business model won't make people happy. You want people to think that what you are selling them will make them happy, yet not have them be happy, so that they have to keep coming back.