I guess, approximately 12 years after unlimited energy and unlimited manufacturing capability across all segments of the economy, we will have the first generation of kids with zero ability to compete and therefore the possibility economic collapse. It is also likely that the economic implications will not be fully comprehended and incorporated into the world economic system which means that specific corporates are competing. Multiple system shocks will likely put the worlds economic system at a breaking point, after which, based on mankind's ability to work together, it will be a choice between (a) nirvana / star trek / culture, or (b) dystopian future / enslavement by the few, (c) the apocalypse / terminator .
Personally I prefer (a). Our ability to work together has not been proven. Consider Kim/Bob/ with unlimited energy and unlimited manufacturing.