And now they're moving to Boston. CT loses another multinational company, they just can't catch a break. Then again it is entirely the state's own fault for driving businesses away.
As I recall, Lego cited talent as their biggest reason for locating[0]. From the same source, the governor of CT says that state policy wasn't part of their relocation plans.
I hate to say it, but Lego is probably right here. CT and MA are very similar from a cost-of-living perspective and, all other things things being equal, Boston has a larger and more diverse talent pool, and is a more attractive place to live for retaining that talent. I suppose you could extrapolate that to state policies, that the state isn't doing enough to make CT an exciting place to live but that might be a bit too uncharitable. I say this as someone who grew up there; my mom even worked at the Lego plant for a brief period in her 20s, and liked it there. As a Lego-loving kid, I always took pride in the fact that all that magic happened so close to home.
Politics. Everyone blames The State for anytime a business does something they'd prefer otherwise (Such as building in location A instead of location B; regardless of merit)