I don't know what is so shocking to you hate to be insensitive but people have killed other people and gained nothing before. What makes this any different but anyways people want the game so bad and get so worked up over it, it kinda makes sense they would kill for it. GTAV has had more of a frenzy about getting the game than the last couple of Cods so it shouldn't come to a surprise someone would stab someone for it.
"We are ghosts, that have no place to haunt. Non-existing phantoms."