It seems to me that the word 'sustainability ' is rapidly being corrupted into meaning "how can we continue rapping and pillaging the earth at the same rate we are now without anyone noticing".
You see the concept of sustainability (from a developed world perspective in any case) is already several decades to late, as we've passed the point of 1 planet sustainability. What we should really be talking about is controlled contraction to a state of equilibrium.
In Jared Diamonds book 'Collapse', all of those extinct societies believed that technology was making their civilizations more sustainable, yet the net toll on resources was incrementally negative.
The news this week that India is now making a car for under $3000 and Detroit intends to keep churning out behemoths until 2020, seems to illustrate this all to well.