@ROMARY To respond to something in your post, the articles have stated that the lions often wander off the reservation so to speak; that is, out of the protected area. Although Cecil was lured out of the protected area, the current claim is (which I'm not at all sure I believe) is that the lions have "often" wandered out of the protected preserve - and not by much either because this cub was killed not far from where Cecil was. It was a "legal kill."
So my response is that if the authorities know that, why aren't they doing more to protect these lions? That is, make the protected area larger. Or something - anything to protect them. Best yet, ban the hunting altogether. But this story is tragic because the authorities knew the lions have been wandering off - they can keep track of them via their monitoring devices that have been attached to them (which is how they knew this was one of Cecil's lions).