Over at The Nassau Institute site, Professor Jaana Woiceshyn provides an interesting answer.
Here's a couple brief quotes:
"As Peter Schwartz convincingly argues, modern intellectuals have distorted ‘selfishness’ by packaging together two disparate elements: the legitimate pursuit of one’s self-interest and the immoral exploitation of others by force or fraud. Such a package-deal concept equates businesspeople who are great producers of material values, such as Steve Jobs and Jeff Bezos, with criminals who destroy values by preying on others, such as Bernie Madoff."
"...if human flourishing is the goal and the standard, capitalism is the social system we should embrace and advocate. It would provide each individual the best opportunity to pursue their own happiness, voluntarily trading with others, without government regulation but with protection of their individual rights."