True
> The fact is that there will always be a locus of concentrated development
Also true
> and it's not because it has a special culture.
I don't think this is always true. Why can't there be cultures that are more likely to serve as a locus of fast development? Sure, there are geographic and climatic factors, but there are also cultural factors.
Kinda like the rain forest. It's the global rain patterns that cause them. It's not that the rain forests have a special rain attracting power.
Development springs from us, it doesn’t appear out of the sky like rain.
Having personally experienced the humans in various places, I’m astonished at how differently people see and engage with the world. The difference in outcome, however, is all too predictable.
Yet there do seem to be some traits that enable more "success" in at least something close to industrial, market-oriented societies. For example having a high-trust or risk-tolerant cultural values seems to have some success correlations.