What I support, is everyone being able to do whatever they want, so long as it does not harm others. And yes, that also includes any business.
Who is actually harmed if a business chooses to hire someone else for cheaper? Not a god damned person. Otherwise, that's like saying you are harming a fancy restaurant by eating at McDonald's. No, you are simply choosing a different option, end of story. Should we be forced to shop at a locally-owned, small business instead of Wal-Mart? After all, you want to protect people, right?