The consumer has the power to change things, but only collectively, not individually. You only have to look at the US Congress, which has an approval rating of only about 10% and is much reviled. However, as long as the collective will is to do nothing about it the status will remain quo.
The same goes for companies like FoxConn (which BTW makes products for Apple and IBM) - as long as people still patronize them their workers will continue to commit suicide.