They can’t run this program on a societal level because it would cost too much (>100B a year in the US alone, which is surely more than the value they derive fr

They can’t run this program on a societal level because it would cost too much (>100B a year in the US alone, which is surely more than the value they derive from it). So we really only need to be concerned about whether this hurts the individuals involved, and whether Facebook plans to do anything unethical with the data.