I don't know how that assumption would correlate with SV. The Peninsula and the SR237 triangle aren't known for their creative diversity --they were orchards just a few decades back -but those valleys were the primary genesis for the information technology we have today. When the HPs, Fairchildren, NatSemis, Intels, etc. began all the Beatnicks were in SF. The valley was a kind of backwater --well, it was mostly orchards, from what I can tell. Despite that those companies were able to find bright people who brought forth progress and ideas which profoundly affect us today. So, I don't really see the correlation between creative types and the discoveries by the engineers. That's not to say engineers can't enjoy the creative arts as pleasure, but to say they are related directly seems a stretch, to me. It's not a detriment to have creatives, but not sure they were a necessary ingredient.
> I think there's definitely a loss when a place becomes homogenous due to gentrification.
I think the premise is an old canard. Post WWII Tokyo had a choice to make. Change rapidly and modermize and progress or remain chained to its old ways and remain a kind of defeated backwater. They chose the former, and while modern, Tokyo is not "boring" and homogenous. There are thousands of distinct neighborhoods with their own unique character, despite the fast pace of building and modernization.