A huge one: Seattle is starting to feel a bit like a company town. This has all sorts of practical considerations, like labor cost and real estate availability.
For example, from https://www.geekwire.com/2017/how-seattles-office-market-bec...: Amazon "takes up approximately 20 percent of Seattle’s office inventory, one of the highest concentrations in the country by a single corporate entity," and Amazon anticipates 50% growth in square footage between 2016 and 2020.
tl;dr: the strongest reasons for 2 HQs aren't political.
A huge one: Seattle is starting to feel a bit like a company town. This has all sorts of practical considerations, like labor cost and real estate availability.
For example, from https://www.geekwire.com/2017/how-seattles-office-market-bec...: Amazon "takes up approximately 20 percent of Seattle’s office inventory, one of the highest concentrations in the country by a single corporate entity," and Amazon anticipates 50% growth in square footage between 2016 and 2020.
tl;dr: the strongest reasons for 2 HQs aren't political.