I don't want you to think I'm ignoring your comment.  Your comments and questions often make me think, and reflect.

it's a difficult question for me, because one of the fundamentals to answer it is to assess what people need.  I don't think we really need much materially.  Thoreau's book Walden was fascinating because it showed how he could live in the beauty of our world, for almost nothing.  but he had neighbors who were working their tails off, feeling they had very little,,,and it was all due to different expectations, different life plans, etc.  The neighbors had really accepted the expectations that they thought society had put on them, and by trying to meet those perceived requirements, they created a life of foolish activity that left no room for enjoying the world's beauty.  I really think I could be happy with a small home, maybe even just a room,,,a library close by,,,,a computer and internet connection would be wonderful--books and computers are windows to the world.  a job that would provide enough to eat.  and a spiritual place of worship and some fellowship would be wonderful.  but that is actually with us as we walk around every day.

materially I think markets with appropriate government controls are the best way to allocate things.  Human beings are so incredibly creative, we will create an abundance if we have the right incentives.  I look at our history over centuries and see incredible growth in material wealth.  poverty levels are way down in the world, and imho going far far lower over the next 50 years.

I think we have bigger challenges spiritually than we do materially.  Your question is a little too deep for me and I'm rambling, so I'm driven to the Tao:, Chapter 16, Stephen Mitchell translation:

Empty your mind of all thoughts.
Let your heart be at peace.
Watch the turmoil of beings,
but contemplate their return.

Each separate being in the universe
returns to the common source.
Returning to the source is serenity.

If you don't realize the source,
you stumble in confusion and sorrow.
When you realize where you come from,
you naturally become tolerant,
disinterested, amused,
kindhearted as a grandmother,
dignified as a king.
Immersed in the wonder of the Tao,
you can deal with whatever life brings you,
and when death comes, you are ready.