Frankly, now I'm not so sure I was right. No other place in the US (maybe in the world) has the amount and magnitude of technical talent and know-how, access to capital, or strength of network to compete with SV right now. Spend some time in SF, or Palo Alto, or Mountain View, and it's immediately obvious. Go to a cafe and people will be talking about tech. Your neighbor is probably in tech. Drive along the highway and you'll see billboards for tech products, and tech office buildings along the highway. Tech is deeply ingrained in the culture, top to bottom.
There is no other place in the US that is like this and the gap for SV is still only accelerating.