The whole country is SV now, plus or minus a few percentage points.
Even in nowheresville-Michigan, any house near any job costs about 4 to 5 times what it did 15 years ago. We even have cities that have lost total population and the prices still skyrocketed. Even if you scope it to just say, a specific small town -- a house that cost $80k in 2012, that exact same house now costs $360k in 2024, and wages did not rise 400% to compensate.
Tech folks sit in SV with a $200k/yr income and think, "ah, see, Michigan is so affordable". But the people here are holding Masters Degrees and student debt and make $45k/yr, $360k is every bit as out of reach to them, as a $1.5 million house is to you in SV.
Sure, not every place is SV from a literal perspective. But from a relative percent basis, nearly every city in every state in the US is now experiencing their own SV-like housing price explosion (regardless of whether their total population has grown or shrank, regardless of whether they have made it difficult to develop, or have been very open to new development, as most of Michigan has always been).