[xoa]

>The fact that we can bake another pie doesn't make pie-eating positive-sum.

The fact that we can "bake another pie" for 1/100 the resources is the definition of positive-sum. There is now more to go around. Even if previously the pie was perfectly divided but now of 100 pies 20% goes to whomever came up with the better way and another 50% goes to whomever financed the better way, the remaining 30% to the masses is still 30x the pie. I'm really not sure what you're confused by here, unless you're getting really lost in analogies.

Again: a basic definition of increasing wealth is increasing core abundance and efficiency. There can be more useful energy/resources to accomplish goals with, and there can be more efficient ways to achieve goals. Either or both combined mean there is genuinely more to go around. How best to distribute energy/resources remains very important, but does not change that having more and/or having it go farther means more wealth overall.