As there is a suspicion (as yet unproven but likely) of bribes, and as white hunters are licenced I wonder if the white hunter responsible for organising the client maybe got his licence through the back door. I have no basis for this though. As for the lifespan in the wild, imo Cecil was an elder statesman and no longer within a pride, therefore without his ladies to do the shopping for him. Made him an easy target for baiting. I have nothing to substantiate this though, just very much my opinion.