Why is it that I see Greystone as this: They found a gateway to another world but it's a world where violence was impossible. Where the laws of nature simply made it impossible for greater deregulation to do any harm there. In other words, it was useless to them. So they began to use it for the only thing they could think of, to send off their undesirables. The people there didn't really know how GOOD the life was for those sent to that eternal prison because no one ever left. And the reason no one ever left is as more people entered, that place grew bigger. Basically, it's an entity named Greystone. They're feeding their undesirables to that entity. Hence the gates, to keep people from seeing its huge maw. But what people don't know is that it doesn't kill those that go within it, it keeps them happy. Because that's what it feeds on. Happiness and contentment. Negativity and sorrow actually poison it. So as more go in, sure they COULD leave, but they do not becuase it makes sure they're so happy they don't want to.