> It makes me wonder if this is another negotiation tatic by Amazon to get the final city to shell out more incentives.
Alternately, Amazon has liked pitting cities against each other so much, that they decided to keep doing it forever. "City A, we're looking to start a major new project up. City B is willing to offer X, Y, and Z if we launch it in the City B office, are you willing to beat that for us to open it in your office?"