Yes, employing lobbyists is one way to flex your muscle in DC. But owning a newspaper and employing lots of people in the area is another way.
Imagine you're a mid-level bureaucrat facing a routine decision that could help or hurt Amazon. Now imagine that your spouse works at The Washington Post, your college-aged daughter is an intern at Amazon, and a local non-profit you care about just got a donation from Bezos. You can imagine how that could perhaps sway your decision.
From my perspective, Amazon wants a piece of government IT. Which is expensive due to regulations but also lucrative.
Maybe that's partly why Northern Virginia is a leading candidate, but it seems like there might have been even stronger options.
Having a workforce in a low population swing state could have disproportionate impact on national politics. It could elect Dems, or turn against them if they move to break Amazon up.
(I'm not saying this because I know which party would favor Amazon more, but just because polling suggests tech workers are mostly blue, so I think that's the direction you'd start.)
This is if politics were the only consideration, though I'd wager the main considerations are far more mundane, something actuarial.
How so? If you turn a state purple or blue you're now at risk of being regulated by the state in addition to federally. Red states are generally hands off when it comes to business.
If you give a state to green, with the power to turn it back purple any time green threatens your workers, you have the policy leadership in a bit of a hostage crisis.
Ideology is flexible in big tents, and everyone is a pragmatist with respect to their constituency. Ds in hunting states are more circumspect on guns and Rs near DC go much easier on federal employees.
* Proximity to low latency backbone connections (originally located there due to government agencies)
* Tax incentives by VA
* Low risk area for disasters
* Cheap power
* Available land
My take on Amazon's political ambition was always that one main goal of HQ2 was to get 2 more US senators on their side. If they now are adding 4 instead, I don't exactly feel disproven :)
You can lobby from pretty much anywhere with a budget and a hotel ballroom rental.
They certainly don't need to be near the upper management or big engineering teams of HQ2.
I think this trumps proximity to the federal apparatus.
Consider that if Microsoft had put an office in the DC area in the mid 1990s we would all be shopping at some e-commerce behemoth owned by Microsoft.
The reality is that for a company like Amazon, regulatory risk is the biggest existential threat to the company's future, and the only way to fight regulatory risk is through extensive lobbying and various legal forms of bribery that involve lots of face time with powerful officials.