The rise of the platform economy has been the subject of celebration and critique. Platform companies like Uber, Airbnb, and Postmates have been rightfully celebrated as positively disruptive, introducing much–needed competition in industries that have been otherwise over–mature and...

Twenty years ago, Harvard Business School economist and strategy professor Michael Porter stood conventional wisdom about the impact of environmental regulation on business on its head by declaring that well-designed regulation could actually enhance competitiveness. The traditional view of...