National interests win hands down, corporate interests are profits, the most profitable activities can also be the most immoral. If corporate interests were greater than national interests, there would be no way to prevent corporations from illicit actions. Why must a corporation offer any incentive for a customer to buy when they can simply steal that money without the trouble of producing a product at all?
This isn't entirely true. In a country where the vote of the people is what drives the law the people can vote to limit the activities of the corporations, should their activities be seen as illicit actions (or at least more than the people are willing to tolerate.)