[CamperBob2]

A few moments' thought will convince just about anyone that their best chances of survival will come from allying themselves with a strong, resource-rich leader, namely the one they already work for.

Immediately turning on such a leader would be a bad move, because you'd then have to fight all the other traitors for your share of the loot.

[Ekaros]

If I was a guard. Would I pick up my boss I see every week or some random dude I might have seen year or more ago once? Probably would go with the boss that I am hopefully reasonably friendly with. There really is quite a chain of command even in security.