"Companies don't make money killing people"

No, they don't make money killing their CUSTOMERS. But they can make a lot of money by not giving a fig about people impacted by their operations.

http://en.wikipedia.org/wiki/Bhopal_disaster

This is why we have regulations, by the way. So when amoral idiots find themselves in a position to do serious harm, there's some external force to compensate (as much as possible) for their lack of suitable ethics and working moral compasses.