See, corporations are highly amoral entities. not entirely, but overall when all + and - add up, they don't care about doing good, only about making profit for shareholders. And in many/most cases, doing high profit while being nice and friendly and all this is much harder than using dirty tricks and breaking rules (moral/law/whatever).

From my personal view as an employee of one corp, it all comes down how people are rewarded/motivated to get things done. If short term profit is the king, morals are not so much part of the equation, resulting in all kinds of mess. Exceptions do happen, but they are what they are - exceptions...