This is the same tired argument that was made when the US pushed these jobs off the continent - if the very low wage jobs are allowed exist; eventually enough wealth will be generated that nobody needs to do them. Those sweatshops are in fact a path to prosperity. In some sense it is a cosmic win that all the capital was developed in Asia because they needed it more, but that probably wasn't the sort of charity that policymakers intended at the time.
I think you may be undermining what slavery was .
I have met folks who work in workshops in India that export stuff to USA and other developed nations. Those workers make a whole lot more money than their neighbors who produce for the domestic market and they have better working conditions. Their overall quality of life, while nowhere close to G8 standards, is so much better. And their community benefits from their increased wages.
Which is coincidentally quite similar to the treatment of North Korean and Chinese penal workers. Russian labor camps are pretty far up there too.
Many Foxconn factories have armed guards, but it's not to keep people out...