I believe what you're saying can be true, but when apple hires Foxconn to build their products, they should assume (and expect) that Foxconn treats their employ

I believe what you're saying can be true, but when apple hires Foxconn to build their products, they should assume (and expect) that Foxconn treats their employees decently. If I hire a company to write a piece of code, at the end of the day I'll care more about the quality than anything else. I will expect and hope however, that everyone who's working on it is treated fairly. I believe Apple does a their due diligence on this when picking their partners. And regardless of that, it's mostly on Foxconn to do the right thing.