[tptacek]

I'll try to use your comment to refine my argument.

Stipulate that a family of four with two professional working full time is going to move somewhere in the US --- that is, they're not staying in Cleveland because they grew up there.

Then, accounting for regional salary and amenities, school quality and cost of schooling, overall burn rate, and housing costs: why would someone choose of all places Palo Alto?

[linkregister]

It's only rational for the upper-upper-middle class and higher. Even the upper-middle class would be better served in a different community.