If Bob is so invested in selfless help, why doesn't he drop some cash and build a fence to permanently keep the elephants out? Also, to those suggesting that k

If Bob is so invested in selfless help, why doesn't he drop some cash and build a fence to permanently keep the elephants out? Also, to those suggesting that killing this elephant is chill because it fed a lot of people, I'm pretty sure there are more cost effective ways to feed people than mobilizing an elephant hunting squad.