Define "doing things which enable you to survive." In my definition, that doesn't involve being king or exploiting others to hoard more wealth than you could ever hope to spend. You need some minimum amount of resources to survive but hoarding many times more than you need doesn't help you survive and only harms others.

"If a monkey hoards more bananas than it can eat, causing its peers to starve while most of the bananas rot in its pile, scientists will study its brain to find out what the hell is wrong with it. But when a human does it, they get celebrated under capitalism."

Also, it was once human nature to flee from fire, but once we learned to control it, it became an integral part of our lives. Human "nature" changes over time because your brain is pretty much a blank slate when you're born and doesn't fully finish structuring itself until your 20s. Your entire childhood is spent developing your "nature" that you'll have for your adult life (and even then you can change it at will even in adulthood if you change your living conditions), which is why we're more influenced by the conditions we grow up in than any sort of innate biology. What "nature" was best for hunter gatherer or even medieval times are totally obsolete in our modern day, so they stop being our default "nature" due to children no longer growing up in those conditions.

The idea that your nature is influenced by your conditions isn't even unique to humans. Most animals are the same, a house cat or dog will learn from a very young age how to beg for food from their owners while a feral cat/dog won't because that's not beneficial for their survival when they're not a pet. Hell, house cats keep making kitten sounds because their owners keep treating them like kittens, while feral cats stop meowing once they leave their parents. Animals born and raised in captivity in general often show completely different behaviors and personality compared to wild animals of the same species, because their brains are literally structured differently due to growing up in different conditions.