Imagine if Stack Exchange set aside some of its proceeds to help pay a set of those users who have impacted the most people or have some of the highest reputation scores, which would in turn cause those people to give back even more to the Stack Exchange network, or possibly build full careers out of it, out of helping others.
Just like YouTube's model had started the changed back in 2007 it seems this has led to even more growth on their network, and in turn more people being entertained. Much the same this model would help growth for Stack Exchange, increasing revenues, number of questions asked, question and answer quality, and much more. I'm a bit biased but I think some sites (cough Stack Overflow cough) deserve a larger market share because they are more technically demanding of quality answers than others, but that's just me.
The question is, what does everyone else think?