Ahh, you know...you're not wrong; and probably the balanced answer is that the corporations themselves have a huge number of employees with beliefs along a wide spectrum, and there's definitely some sociopaths at the top like you describe. Another portion of their employees justify it for a paycheck, some that want to get out of the business, some people that are probably true believers in their companies, some in denial etc. I can't claim to accurately guess at what the breakdown would be though.