Sure the population has increased but not everywhere. Kenya ranks 118th in the world as for as population density. It doesn't have the mega cities like other countries. The lion population is down in Tsavo and in other national parks. That is the troubling part. If the govt. doesn't value them and put $$ towards protecting them they will disappear. However, I do not believe that all the large mammals will go extinct this century. People are learning and trying to solve some of the issues...hunters and none hunters.