Well it's natural given the circumstances in which we exist (fighting for scraps under a perpetuated myth of scarcity).

You could say "Well, humans are just animals and we were always fighting for scraps so this is our natural state". But humans only thrived and evolved because we were so good at adapting to changes. So if now our social and economic reality is artificially rigged by those with wealth and power to stagnate everyone in some paleolithic struggle for survival, instead of being allowed to enjoy the true fruits of our advancement as a species, how natural is it really? And are we being deprived of the next step of our evolution because of the resistance to keep leveling the playing field for everyone instead of the few.

I'm not a scientist so I don't know the answers to any of these. I actually sort of believe in the idea of arrow of time so literally everything "is natural" and unavoidable. It is natural that the "few" have wrestled control of resources from the "many". And maybe it is natural that this goes on forever.. but it's just as likely or even more likely that it doesn't go on.

I'm not so interested in what is cruel and what is not (although I certainly want everyone to prosper and lead a life of fulfillment and meaning). But life of any kind is such a rare thing in the universe and keeping it going seems to be a dance on the sword's edge. So I'm more interested in what is better for ensuring that life just keeps going, rather than keeps going under a set of pleasant circumstances.