RE: The Problem of Collective Reputation
This is a fine exegesis of the state of social physics. Consequently, it suffers from shortcomings typical of extant physics, particularly oversimplification. You point out that your analysis is based on economic metrics, and this ignores that many social factors are vastly more important than mere money.
You use the words 'community' and 'crowd', and this neglects that we are communities, crowds, and individuals. I rarely, for example, find any particular community a perfect fit. I virtually always will act contrary to the modus of a given community.
Presently, social physics is incapable of addressing this, as a great deal of knowledge of humanity, society, and cognition remains unavailable. The actions you point out that are undertaken by 'the crowd' are also countered by 'the crowd', and this proves that there isn't a crowd, but crowds.
While there is great value in present understanding, it is far short of a definitive basis for any kind of roadmap, long range planning, or similar undertakings. Social physics remains an intuitive art more than a science, and will for quite some time, IMHO.