Big-game hunting, where visiting hunters pay large amounts to kill trophy animals, is a practical source of revenue for many 'hunting farms' which accept guests. Some also accept non-hunters or 'photographic' guests.
It is interesting that the rich killing animals for sport is usually regarded as 'hunting', whilst the poor killing them for food is generally termed 'poaching'. That said, though many find hunting distasteful, it does benefit the Namibian economy greatly, and encourages farms to cultivate natural wildlife rather than introduced livestock. Until there are enough photographic guests to fill all the guest farms used for hunters, pragmatic conservationists will encourage the hunters.
If you don't hunt, but choose to stay at these places, ensure either that you are comfortable with hunting per se, or that there are no hunters on the farm whilst you are there. Arguments over dinner are surprisingly common.