Thanks to Marc Schiller for pointing to this Dave Winer quote (advising Jason Calcanis) that has stuck in my head for the last few days:
"...he needs to figure out a way to build the company so that many others can profit from it."
Building eco-systems for others to profit/prosper/do well is a very interesting thought, but it's even better when it's thought of in the context of real co-operation. At the broadest level, the collective inter-dependency makes 2.0 eco-systems much more intesting and healthy organisms than just naked individual pursuit of $ (though that is certainly possible also, for the selfishly inclined). It's just that, as Jason argued recently, co-operation drives evolution, and the tools that we have access to now are facilitating that more efficiently.
That's the theory, anyway, and I'm sticking with it.