If every person's situation is relative, then how do we oppose slavery or abuse? It's better than starving to death, right?
The real problem here is that there's no recourse in our current economy. China makes well over half the electronics we buy so it's not like a boycott of Apple would necessarily help.
I see two approaches that could help. We can appeal to the humanity of CEOs, boards, and investors and try to press them to enact change. Or we can use their vanity by embarrassing them with productions like "The Agony and Ecstasy of Steve Jobs."