I don't buy it. The article ignores the inherent instability of the "gains" and the problems of large scale urbanization. Also, these global visioning articles always seem to forget that somebody has to actually work - we can't all be middle class, fat ass, xBoxers. US and Europe don't work anymore (and southeastern Europe never really did to begin with), China's moving to the "middle class", so who's left?
"Honour, not honours." ~ Sir Richard Francis Burton