Factors have to be made overt and solutions not too subtle
Wasnt it Tropico that had objects you built that coersed control of 'slaves'
With cavemen it would have to be fairly simple. many of the things discussed sound more like things that would be there in a villager level of social organization
A historical factor is that nearby peoples from the local group (Cave #217) often had relatives in them and the blood ties would have a whole lot more impact on how people behaved