If people consider the publishers ripping them off then there is a simple, legal answer, don't buy the games in question. What gives people the right to just take something they haven't bought?
Technically speaking, it's not really "illegal" as such to download games, it's a civil matter. But these people aren't "taking" in the way you put across, people have the "right" to do so simply because they can, it's possible, very easy and risk free. Your problem should lie with those providing the content.