The world has enough for everyone's need, just not for everyone's greed.

On average we humans use too much, yes. I don't know if WWF (not the wrestling one) still does their yearly report, but anyway they used to and the only part of the world that in average was over carrying capacity was the West (the first world, the golden billion). And within countries there are also stark differences.

Placing the blame on the poor billions of the world is at best ignorant and at worst racist (not saying that you are, but placing the blame on poor people with more pigments has been very common). Placing it on the billionaires is more fitting, though really it's societal structure that upholds the growth obsession and produces billionaires. But at least the billionaires has power, and in general fights every attempt at making things slightly better, which makes it more fitting to blame them.