For a good examination of what kind of society you might get when scarcity is gone and humans can create stuff at the drop of a hat, read Michael Moorcock's 'Th

For a good examination of what kind of society you might get when scarcity is gone and humans can create stuff at the drop of a hat, read Michael Moorcock's 'The Dancers at the End of Time". He doesn't go into details of how they got there or how it all works, but very interesting nonetheless. The main characters seem to settle into some kind of permanent battle to outdo each other with lavish parties and collect people from passing civilisations and time travellers just so they can have someone to talk to.