Severely competitive and hopeless environments will do a hell of a job on human compassion.

Read about the dehumanizing effects of concentration camps on individuals hiding food from their family or praying their father dies so they can get his food

Its arguable that our ability to build luxurious enough societies has allowed out compassion to flourish far beyond what is witnessed elsewhere in the state of nature

Having less competitive/ruthless (sub) societies i.e. environments where one co-operates is what allowed us to get luxury not the other way around.

> concentration camps

Concentration camps are an example of humans taking advantage of one another. Arguably, it's the ultimate example.