In a free market, capitalistic and democratic society in which we live, optimization or maximization for self is an important underlying element. In America, another important tenant is one of give-back.
The "Haves", by definition "have more", are looked at many times as not doing enough. When it comes to money and material wealth commitment (charity, taxes,etc), they are quite generous. However, when it comes to legitimate time commitment and knowledge transfer, they are highly deficient. There is no law or anything in stone that states that someone with knowledge needs to share their insights. But it is the key ingredient to truly addressing the "Have/Have-Not" growing imbalance in the US and the world.
There are many people in the US and the world that profit mightily (power and money) by keeping this contentious "Have/Have-Not" negative dynamic in place. My "100 posts" will hopefully shed light on many of the critical details and challenges that all of us face in life.