I'm hoping not, because I'm enjoying cheap rent in a metropolitan city (Chicago). I don't want to compete for rent with even more technies than already exist with, esp. when Amazon is going to pay above market wages.

Chicago would be another good candidate.

I think its one of the top ones, though i'm struggling to thikn of an area of the city that has 100 acres of greenfield to develop

Isn't Chicago's municipal government spectacularly dysfunctional?

Yes and no. Chicago has been really good at wooing companies to move their headquarters here: see Boeing, McDonald’s, ConAgra, GE transport, Kraft Heinz, the list goes on.