I'm not sure about the non-zero sum economics models anymore. Physics says that the planet is finite, so much of the "wealth creation" is little more than changes in perceived valuation. And while a lot of people have a lot more $ and things like iphones, most people have less land, more polluted oceans, and many other things that may turn out to be move valuable in the long run than those iphones.

On the land thing, one of my grandfathers had close to 500 acres of farmland. Today I could barely pay the taxes on that land if it was still in the family. But its not, instead there are a couple dozen families living on smaller 20 acre plots.