Well I'm not really sure. It seems likely they would have the capability, but the concept itself is just too destructive to the current structure to be willingly created by government. It could have been devised and the leaked by "Satoshi", but direct responsibility of government does not seem very probably. Even if they would consider 7% of worlds money as future profit, this technology have potential to undermine everything our current system is standing on. This question will remain mystery for some more time.
Thank you for good article tho.
Edit: Also to be honest this level of innovation doesn't seem to breed in corporate environment very often. So I'm inclined to believe it was made outside by someone truly special! (Still most likely group of people)