Give a man a fish and he'll eat for a day. Teach a man to fish and then buy the pond. Tell him he can't have the fish, but he can fish for you and you will sell the fish and give him a very small cut, and then he'll say stuff like "I am hungry and my teeth hurt". Nobody wants to fish these days.
@MostlyHarmless I’ve always had a different pedagogical conclusion to that trope: … but give a person an AK47 and they can liberate the entire fishing area.