I'm sure there are, that's where a lot of small non-profits find their leaders and board members, but past a certain size, the amount of time required means tha

I'm sure there are, that's where a lot of small non-profits find their leaders and board members, but past a certain size, the amount of time required means that they would not be retired anymore, and I presume most of them retired because they had interests to pursue beyond managing large organizations.