Attitudes like that annoy me - to argue that they all do it so there is no point in caring is kind of lame. Why not just say I don't care instead of blaming your hopelessness in the face of globalisation.
We all have the ability to vote with our wallets and it's not so hard. I own a copy of the ethical supermarket handbook and after using it for a month or 2 you get familiar with the brands that are ok and you just buy them as a routine so it doesn't slow your shopping down or cost more.