SV exists thanks to CA's lack of non-competes and the Stanford and UC Berkeley innovation ecosystem.

Otherwise, Boston, NYC, DMV, Seattle, Austin, Dallas, Houston, Chicago, and others all could have become the next Silicon Valley.

That's interesting because it's way more complicated than that. Boston had the 128 loop and Digital. TI in dallas. Simi valley. I think it's more like the end of defense spending in the late 80s early 90s winnowed down the several "SV"s into only one.