I don't entirely disagree .. but I'd describe the situation differently: humanity forms a large interconnected system. And many of the severe problems we face come from the fact, that we allow for too large and powerful organisations (states/companies/..) to first exist and then - even worse - to become corrupted and develop their inherent dynamics.

The problem with too powerful and corrupted organisations is: they have the power to ruthlessly translate and enforce the sum of all the billions of small egoistic behaviors (that are just a fact of human nature so condemning them is meaningless) into horrific actions that none of the individual people, behaving - rightfully so - egoistically, would approve.

Example: the collective push of billions of people for small prices, aggregated and amplified and distorted through powerful organisations, leads to instances of terrible exploitation, like child labor, that (almost) noone would actually want.