Well, corporations are by their nature sociopathic entities that seek to maximize profit regardless of anything else. That's fine, and I don't think anyone can blame them for taking advantage of loopholes.

The question is, why do the loopholes still exist? Why aren't more people angry about them?

EDIT: Downmodded? Seriously, guys, noncontroversial statement. Go talk to an economist. Or a lawyer. Corporations are legally obligated to be sociopathic and maximize profit above all else. It's a feature, not a bug, invisible hand and all that.