What happens at the cellular and molecular level is really not so different from what happens in human societies. I am not quite sure to what extent you mean t

What happens at the cellular and molecular level is really not so different from what happens in human societies. I am not quite sure to what extent you mean this. I would add that the bottle neck on evolutionary futures for our genes imposed by our reproductive system is very strong, and that there is no obvious analogy in societies. The existence of such a strong bottleneck of course shifts the game theoretical dynamics of cooperation and defection, strongly enabling cooperation between somatic cells (as you say, with cancer as an exception).