It is always rational for the quasi-Nazis to kill the quasi-Jews, from the Nazi perspective. It’s just not always rational for me to kill the Jews—just because someone else wants something, doesn’t mean I care.
But if I care about other people in any concrete way, you could modify the problem only slightly in order to have the Nazis suffer in some way I care about because of their hatred of the Jews. In which case, unless my utility is bounded, there is indeed some very large number that corresponds to when it’s higher-utility to kill the Jews than to do nothing.
Of course, there are third options that are better, and most of them are even easier than murder, meaning that any agent like me isn’t actually going to kill any Jews, they’ll have e.g. lied about doing so long before.
It is always rational for the quasi-Nazis to kill the quasi-Jews, from the Nazi perspective. It’s just not always rational for me to kill the Jews—just because someone else wants something, doesn’t mean I care.
But if I care about other people in any concrete way, you could modify the problem only slightly in order to have the Nazis suffer in some way I care about because of their hatred of the Jews. In which case, unless my utility is bounded, there is indeed some very large number that corresponds to when it’s higher-utility to kill the Jews than to do nothing.
Of course, there are third options that are better, and most of them are even easier than murder, meaning that any agent like me isn’t actually going to kill any Jews, they’ll have e.g. lied about doing so long before.