Plus it's really tough to attract out of state talent in Utah.
I think Salt Lake would be a very hard sell compared to what Amazon could easily get with Denver.
Including SLC and Utah counties both: 2+ million
University of Utah, Brigham Young University, Utah Valley University
Substantial tech talent, startup scene. Adobe, EA, Ebay, Microsoft, Oracle all have a presence. And don't forget the NSA.
International airport connects to Canada, France, Mexico, Netherlands, UK... but will take two hops to get anywhere else. https://www.slcairport.com/assets/pdfDocuments/Flight-Schedu...
Meetingplace of I-15, I-80, I-84
Culture almost the complete opposite of Seattle's.
Mountain Time Zone
Killer cost of living
Government willing to make substantial concessions to tech companies
But... I'm guessing it's just not quite connected enough to be seriously considered.