Has that stopped them so far?

The fact that something is illegal doesn't stop anybody from doing anything unless they have a moral objection to doing something illegal, or unless it's unprofitable to do it because the illegality raises the penalty enough to actually matter. Right now, most penalties don't really matter to large companies (though they certainly do to little ones!).

If there's more money to be made breaking the law than following it, private companies will break the law. They are not as impressed with the importance of the law as you are, I don't think.

Besides, it's only illegal right now. With the current trend toward deregulation of anything that somebody could make money off of, how are we supposed to believe that it's going to stay illegal? We've seen how hard it is for a wealthy company to buy enough politicians to have the laws changed. It's a lot easier to form a monopoly right now than it has been in the past specifically because the law has been changed by politicians who were influenced by lobbyists. Heck, these days, they pretty much just put the lobbyists in charge of the industry.

As to the OP, I agree that it's better if everyone can just take care of themselves, and self-reliance is the key component of independence, and all of that. But in the real world, not everybody can take care of themselves, and nobody can take care of everybody, except everybody. We, the people of the United States, can take care of we, the people of the United States. No individual or private charity is capable of that.

So I say we do take care of ourselves, and each other, and we'll all benefit and live in a happier, more productive, less desperate society. Would that really be so terrible? Will it really keep any of you up at night to know that you've paid your taxes so that somebody else can live? I don't think so.