This is a pure incentive play for the giant.  As a former EC Dev/Site Selector, I can say with almost certainty that financial incentives are probably as high #2 or #3 in their scoring profile. There is not one jurisdiction (except perhaps Quebec...and that is a big maybe) that would be willing to belly up to that bar.  Search the New York Times story on US jurisdictions and the incentive game from a few years ago (2012) - it provides a great overview of  corporate incentive junkies and how US jurisdictions play and get played.   (The Wall Street Journal has also written a recent story on this same subject).   Availabilty and cost  of developable real estate is likely in the top 4 (see their home campus).  They won't spread themselves out in buildings scattered through out any jurisdiction.  Sorry Canada...not sure why the cities are wasting their resources chasing this elephant.  T