I see your point. The thing is, basically every single corporation America is doing something evil, like child labor in other countries, to get ahead. Thus, we would have to stay away from almost all of them, leaving only small businesses, which might not have enough jobs for everyone. Thus, an unfortunate group will be stuck with dealing with the lesser of evils. What is going to protect them? And what about those who can't leave because they aren't qualified for anything else at the moment? That isn't only the uneducated, I'm talking about the teenage workers just getting into the business world.
And many people outside of the company wouldn't really care, as long as they got the product. For example, a group of rich people, or middle class, or whatever, outside of that particular business, will buy the product anyway. You think that a majority of Americans would stop buying McDonald's because of some sort of strike? It's unskilled labor, so the old workers would soon be replaced by other people who needed the money and/or didn't know about the previous mistreatments (at this point the leader of the corporation would have given this group what the last group had wanted to avoid another mass quiting), and life would go on for the company. The guy would still get rich in an unfair way. Also, mistreating you means that the boss knows that you can be replaced easily, otherwise he'd be more afraid. That's why it's harder to mistreat people in a profession in the sciences or whatnot: These people have trained, and are thus very valuable. And notice: what corporation is based around a science (that isn't BS)? Exactly.
I have no problem with all rich, that's not what I meant by 'group.' I have a problem with the rich who get what they have through unfair ways. I'm not for the poor, only those that work hard and try to do something with their lives. I'm for hard work. In my eyes, if you work hard, you deserve more money. That's why I'm for big government: it helps those who work hard, and while there will be an occasional freeloader, 'evil' rich man or whatnot getting through, that will happen in every government system (well, except communism, but that's another monster).
And this is probably random, but I'm pretty sure that you're ideas are liberal, just in a different direction then mine. (Liberal means change. I want change towards the big government spectrum, you want change towards the small government spectrum). I could be wrong though.