Incorporation was a special privilege the government granted, not a right, so anyone who wanted to form a corporation had to convince the government to pass a law just for them allowing them to do it. Saying "I want to make as much money as possible, to hell with everyone and everything that stands in my way" wasn't going to cut it. Basically every corporation was doing some kind of public service. Maybe they didn't have any values beyond stuffing their pockets with cash, but they had to at least convincingly portray themselves as having broader goals and keep up that act well enough that the government didn't take their charter from them.