Comment by hohloma

I bet 100 years ago rich people in developed countries thought the same. The answer was technology (more energy extraction and more efficient use of resources and energy) and now a better standard of living is achieved by several orders of magnitude more people even while the whole population has increased dramatically. Everyone in the world can live by same or better standards if technological progress continues. Ofcourse it will never be perfectly distributed, so there will always be "poor" and "rich".