I'm fascinated by the appropriation of the term "Silicon Valley" to represent all of (a certain type of) technology. I think that the name alone will contribute to the future primacy of the Bay Area in software.
It reminds me of this excellent scene in "The Founder", after Kroc has managed to buy McDonald's and is conversing with its original founder: https://www.youtube.com/watch?v=7FxHY-vLMgs
s/McDonald/Silicon Valley -- makes for an interesting perspective.