A lot of people misunderstand economic systems by anthropomorphizing (it means to give them human characteristics) them, giving them the illusion of thought or feeling.
Capitalism doesn't care at all about humans, it's not human, it doesn't think, it doesn't feel. It has no concept of right or wrong.
Capitalism says "what is most profitable", do that. If killing someone to make money is the most profitable, it's supposed to go ahead and do it, and it absolutely DOES already do this on a daily basis.
Now clearly, that's going to give us some really fucking bad outcomes from a human perspective. So government regulation is how we attempt to prevent corporations from doing these bad things.
If we tell a company: "if you kill people it will cost $X" and $X would reduce their profit below "most profitable" they will stop doing it.
If we want to fix the bad stuff corporations are doing, simply put a larger cost on those things. It's that simple. Pollution, Safety, Health, whatever... price the negative externalities (economic speak for bad things humans don't want) properly and the market will sort itself out.