As a software engineer in Boston this only confirms my feelings that we are a world leader in innovation. I'm looking forwards the the smart people that this will bring to my great city.
I'm not sure that a corporate headquarters is going to bring the kind of people you're assuming that it will bring into Boston.
Also, perhaps this win will offset the impending EMC layoffs. It's a good way for a politician to say they are doing something about the state jobs market, even though the package being offered to GE seems very generous and costly.
Boeing has been here 15 years now.