The legal principle that corporate boards must focus exclusively on maximizing value for shareholders wasn’t always taken for granted. It was enshrined in a 1919 court decision involving Henry Ford and two of his car company’s shareholders, the Dodge brothers. As chairman and majority owner of Ford Motor Co., he had repeatedly raised his workers’ pay, cut the price of the Model T, and reinvested profits in expansion. If Ford were around today his stance might be applauded by the environmental, social, and governance (ESG) movement on Wall Street. “My ambition is to employ still more men, to spread ...