My thoughts on the weave thing. . .
India has about half a billion women who could be potential stock for a couple million black women (tops), and whatever thousands of white and hispanic women. That's plenty of hair from one group of people. Throw in Malaysians, Peruvians, and Brazilians and there's more than enough human hair to go around. Not that many people wear weaves or use extensions compared to number of long-haired women in Asia and South America. Plus every person chopping off their hair is likely to have a fast growth rate. 16 or 18" weft wouldn't take that long to grow.
Talking about people who need to take control of their industry, I hope one day Indian women get power in the weave industry. Not only are they giving up apart of their bodies, then they have to wash it and prepare it too! And all they get is enough money to stay impoverished so that they can keep providing a cheap human commodity for us to buy up! Is there such a thing as fair-trade human hair?