The people who want to work for Amazon wouldn't like living in Utah, and the people living in Utah wouldn't like the people who work for Amazon
I've been in tech in Southern Utah for almost 20 years, and it's extremely difficult to find qualified people.
If I didn't have a house I love, and family around, I would have left a long time ago.
The only billion dollar company HQ around here I can think of is SkyWest (https://www.bloomberg.com/quote/SKYW:US)
Shutdown like this: https://www.reddit.com/r/SaltLakeCity/comments/6yqfgw/after_...
However, SLC itself is actually pretty liberal and has a lot to offer. It's far from perfect (mainly: air quality issues in winter and the political issues), but anywhere you choose has a different set of compromises. Is it right for you? Probably not, but I promise it's a better place to live than it looks from the outside.
The density is 1,678.0/sq mi vs 8,398/sq mi for Seattle, and I consider Seattle already frustratingly spread out.
Its called diversity of thought.
You'd be able to attract people who live there already, but there's 0 chance someone like me would be interested in living there.
Note: I work for Amazon, but have no input at all in this process. This is the first I'm hearing about it.