That is a fair point. But wouldn't an intrinsic motivation for group conformity be a competitive advantage here, instead of being coerced or convinced for it? F

That is a fair point. But wouldn't an intrinsic motivation for group conformity be a competitive advantage here, instead of being coerced or convinced for it? For example ants must have high intrinsic motivation for following the group, they don't need to be motivated or convinced. Likewise, humans come with factory settings for many prosocial behaviors somewhat instinctively (e.g. mother-infant behavior), therefore the group benefit and intrinsic motivations being in alignment can be a selective advantage.