In addition this whole thing is anchored on continued growth. At some point there isn't going to be any growth left, specially as pop. growth rates decline and the third world begins toward economic equilibrium. You can't grow forever, at a global scale. At some point, thirty or forty years from now the growth we depend on for economic viability (as a society) is not going to be there. A new model will have to emerge. The so called neo liberal economic system depends on growth... But its not going to be there forever, as Japan has learnt.
You bring up a good point, namely, on a fixed sized planet how can we have growth forever?
I have some hopes that society on a planetary scale will learn that materialism is bullshit and that we are manipulated by clever advertising and pro consumerism messages in movies, etc. Notice how many characters in movies drive over the top expensive cars - just as one example. Same with houses way larger than a family needs for comfort and a happy life.
