Thanks for this comment, it felt awkward to include all veto-players in Shapley value calculation while writing the post, now I’m able to see why. For offsetting we’re interested in making every single individual weakly better off in expectation compared to the counterfactual where you don’t exist/​don’t move your body etc. so that no one can complain about your existence. So instances of doing harm can only be offset by doing good. Meanwhile, Shapley doesn’t distinguish between doing/​allowing, therefore it assigns credit to everyone who could have prevented an outcome even if they haven’t done any good.
Thanks for this comment, it felt awkward to include all veto-players in Shapley value calculation while writing the post, now I’m able to see why. For offsetting we’re interested in making every single individual weakly better off in expectation compared to the counterfactual where you don’t exist/​don’t move your body etc. so that no one can complain about your existence. So instances of doing harm can only be offset by doing good. Meanwhile, Shapley doesn’t distinguish between doing/​allowing, therefore it assigns credit to everyone who could have prevented an outcome even if they haven’t done any good.