Hunting won't last long in Africa as you know it, period. They don't have the management in place to be generic. Maintaining hunting here in USA is tough and we are allegedly a civilized nation. Take a look at the white tail deer. It has spread like a cancer across our country, out growing it's original habitat and encroaching on other species like Mule Deer and Moose spreading disease. Now in my home hunting area they have considered shutting the season down on white tail due to low numbers from hard winters and wolf predation.
My point; game management is controlled by a bunch of fools that don't have the hunters in mind. If you have numbers in white tailed deer populations fall off so drastically by mismanagement it can and will happen to any game animal. The only solution is a pipe dream of having hunters in charge and making the call on how to manage the game animals. It won't happen.