John sees everything in black and white. So he insists that capitalism is either one thing, or another thing. Civilised, or barbaric. That is why he has to create the other realm of 'in spite of capitalism' where all the positive advances of capitalist civilisation must be placed. But there is no 'in spite of capitalism' that is not at the same time capitalism. Capitalism is contradictory. It is both barbaric, and civilised. That is why it is possible to transcend it.
Yoshie raises a good question when she says:
"What if capitalism creates objective conditions -- socialized forces of production -- of its transcendence but, by doing so, destroys subjective conditions -- thinking human beings capable of collective action -- for it?"
Certainly it has preoccupied me. I wrote a book about it: 'The "Death of the Subject" Explained'. (excerpt: http://www.marxists.org/reference/subject/philosophy/works/en/heartfield-james.htm) To my mind the failure of subjective agency is the more destructive factor in today's conditions. But there is nothing given for all time about that.
Dennis (and Doug) makes a good point on social mobility, that I agree with - but I only meant physical mobility is increasing.