We still need a way to allocate the limited resources, but the primary way to do can't be labor/salaries anymore - because in the near future, unlike all the past millenia, labor of most people is simply not needed for optimum production.
Seems to me most have exaggerated expectations of the impact of automation.
Automation of production has been explosive in the last few years. Companies that automate factories have a critical shortage of practical Engineers (no don't get excited; its one automation Engineer for every million people out of work). Automation Engineering requires a working knowledge of mechanical, electrical, chemical and information systems. My Niece flies all around the world installing and controlling automation, and her company cannot find qualified candidates to fill the demand.
I get your point and I do agree that if a revolution like automation happens too fast, there is potential for social shocks such as high levels of unemployment and worse. But, as you state, the decoupling of the production from labor is actually being naturally throttled down by a scarcity of... labour. And that may buy enough time for society to adjust since education and training are taking longer and longer these days and no shortcut has been created for human learning.
Its growing geometrically. In shockingly fewer years than we think, there will be essentially no 'labor' jobs left. America will never again employ labor; its an obsolete idea. Our civilization is leaping forward, and we should plan on a humane response.
Or, did that mean something about 'poor planet we're exhausting its resources'? Then never mind.
Also, value can increase in a finite resources environment. For example, my iphone is worth a lot more, and is a lot more useful, than the materials it's made of.