Money as the motivator of society?

Consider the hidden cost of reward : When you extrinsically reward someone who had done something that was intrinsically motivated, you diminish that intrinsic motivation and promote the persons dependence on external gains. Is money the best way to motivate people?

 I would rather study because what I am studying is interesting to me, rather than to have a good grade on the exam. I would rather work to provide support for myself and the people around me rather than a salary. What if we rewarded people on the basis of how much good they created for the majority instead of encouraging egotistical wealt accumulation. It seems that our business model, especially the corporate form, is to blame for much of our societal troubles, i suggest we start looking for a better one.