Genuinely greedy people are far and few between. It's just that those people have disproportionate influence in this hubristic society we've built. Also, you're discounting First World suffering, which is probably at least equal to Third World suffering. It's much harder to perceive or measure, though. Global society is a product of human hubris. We have no proof that it is inevitable because we haven't observed a situation in which people are genuinely united against it. There's no fundamental reason for why they should continue to support technological utopianism, internationalism and 'human progress', and the fact that those ideas are still quite popular even under the current state of things is proof that human arrogance is boundless.