Capitalism is not a simple monolithic system and comes in more than one form: entrepreneurial, big firms, state-directed and oligarchic. Some forms are better than others at delivering innovation, opportunity, economic growth and wealth, argue authors William J. Baumol, Robert E. Litan and Carl J. Schramm in their book “Good Capitalism, Bad Capitalism, and the Economics of Growth and Prosperity.” In a review, Susan Froetschel points out how nations must take care to avoid the forms that encourage greed, inequality and complacency rather than the passion for innovation and solving problems that confront the globe.