Human Nature Question re: Marauders

[Ancestor]

Has anyone ever thought about the desertion point for marauders? Thinking about human self-interest, it's easy to think about the point that it's time to get out when the getting is good. But, it's one thing for a random band, it's another when a well organized gang who has been ruling the roost for a while gets punched in the face. Interested to hear how you all have played this. Thanks and cheers!