If someone were to use it against US government entities, maybe the NSA/CIA/etc might decide enough is enough, no matter what country they are in. So far at least publicly it seems like a non-event. But once the phone numbers are identified from that leaked list, things might become more serious for NSO.
People used to fight real wars against adversaries who targeted their country in some way, why should commercial entities supporting such attacks not be treated the same, except via non military action? Spying has always been done, but it can lead to serious consequences.