If there are going to be people out there making war on other people, don't you think it's a good idea for some of those people to at least follow a code of ethics? Not 'honor' but something you can pin down and be sure of, something with the same rules for everybody.
Local companies don't have to internalize their costs, and few actually do, but they tend to more often because the owners live there and they have to show their face in town, and their kids play with other kids.
We increase whatever we praise. The whole creation responds to praise, and is glad.