Let's say that Sam the Sociopath invites Peter the Poor man into his luxurious house. They go to a living room with a fireplace. Sam then pulls out 1 million dollars in a fireproof bag that will last 1 minute. Sam throws it into the fireplace and leaves the room. Peter, desperate, jumps into the fireplace, burns himself, and maybe he recovers the money (or maybe he doesn't).
Does Peter have any reasonable grounds to take legal action against the Sam? Sam never explicitly told Peter to jump into the fire, and never explicitly did anything to hurt Peter. Peter just chose himself to get hurt.
I'm not sure what the answer is. For example, McDonald's is obviously killing people by selling burgers to morbidly obese diabetics. But it's more like McDonald's is providing the choice, and the people are choosing to kill themselves by ordering it (as opposed to McDonald's actively killing a person).
The impetus for this question is Psycho-pass 3/Psycho-pass First Inspector, where a person maintains his mental health (despite killing many, many people) by giving all his victims a choice, despite knowing his victims will obviously choose the option that leads to their demise.
P.S.: I know burning legal tender is technically illegal. Ignore those secondary details and try to answer the spirit of my question. If my example is imperfect (which it probably is), feel free to consider a better constructed example (for example, throwing a gold bar into the fire instead).