The ultimate end is more likely a new equilibrium, in which the difference between the cost of living in the BRIC is closer to the industrialized Western world than it is now. Also, don't forget productivity gains are fueled by new technologies, and the US are still way ahead of the competition in research.
There's not a huge barrier to new discoveries in the US being utilized in other countries, and our only advantage in conducting research is infrastructure for distributing money. Over the next ten years, that could be closed by a cash-rich nation that wanted to (China).
But as they close the gap over the next 10 years, their standard of living and their wages are also going to keep rising. And at some point the gap is small enough that the extra cost of shipping it from China to the US isn't worth it.
