The labor being cheap mostly because the Chinese government doesn't enforce labor laws and doesn't give the people their fair share of the profits.
First part about the labor laws, seems like a valid complaint. But the second part, about 'fair share of the profits'. Where does that come from? As an employee, you are getting paid for the work you are doing not any profit that is made. If you want to get a share of the profits, you need to be a share holder. Some companies do offer 'profit-sharing', but that definitely not the norm.
Alcoa Inc. in May 2008 at 36$, which seems to have dropped down permanently to around 12$. Do you really think that yearly dividends of some say 5%/year would make up for the risk you take that your equity drops 300% overnight and stays there? You'd have to wait a lot of years until you'd have recouped that loss.
300%!!!... nope.. $36 down to $12 is a 66% drop. a 300% drop would imply that you would OWE $72 for each share....
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