Ok folks I'm going to have to set the record straight on this one. First off, the US is indeed the OPEC of plasma/blood products globally.
Secondly, American standards are fucked up in that regard - you're allowed to sell plasma 2x per week. WHO standards are that the maximum frequency is 1x per 2 weeks.
As per this
report writes: Some of the fucked up practices include putting alcohol stores next to blood collection centers (you get drunk easier after your 'donation'), people putting on extra jackets to make the minimum weight or hitting higher weight brackets (for getting paid more), or setting up collection centers near the Mexican border - you can guess why.
Additionally, China has companies in similar business doing similar things: Shanghai Raas, China Resources Boya, Tiantan Biological Products
Conclusion: It's extremely bad in the US, but this isn't something that isn't happening in China either. And the fact of the matter is that many drugs cannot be manufactured without plasma donations - so its part of the cost of science/saving lives.