Shenzhen is at least the third manifestation of the electronics hotspot, after Akihabara and before that Radio Row: https://en.m.wikipedia.org/wiki/Radio_Row ht

Shenzhen is at least the third manifestation of the electronics hotspot, after Akihabara and before that Radio Row: https://en.m.wikipedia.org/wiki/Radio_Row https://en.m.wikipedia.org/wiki/Radio_Row It definitely seems like once some of the factors you mention come into play these things lose momentum and move. Paul Krugman did some very interesting work on economic geography, with one result being that the leading region for a given sector will have a huge margin over the second player, so being in top position is very valuable.