Companies are amoral. If killing people boosted their share price they would issue every employee a machine gun in a heartbeat. The only reason this doesn't happen is it's illegal.
I tend to agree with this in general, especially lately, but I think there is an Overton window of depravity that businesses won't exceed the bounds of unless the industry norms shift it. I think the drift has a lot (or maybe everything) to do with the regulatory environment.