Originally Posted by
CountDVB
Probably because they didn't know what would happen and by now that they can, it's gonna be very difficult to do something. The gods are not one homogenous blob, but a wide and diverse faction, like mortals, and even mroe convoluted because they cannot stray from their core nature as we saw with Loki.
Though also, it is ultimately the mortals who have to stop the killing and be the ones who get along with the mortals and so on. Gods have try to instruct and motivate them, but mortals have ultimately listen and make the decisions.