I think the problem is the same problem with arathi basin in WoW: People still, for some reason, think that killing players > capping points.
There was an akali on the other team in my last game who went something like 25-4. We still won by ~150 points because Nidalee (me) and shaco would simply go to wherever they weren't and capped their points. If they came before we capped, we simply left and went somewhere else, because we were faster than them. At one point I had 4 people chasing me around the middle jungle, so we 5 capped them.