Well, New zeland is also not subjected to US regulations, still US shut down perfectly legal service operating there.
Megaupload got shutdown because they were operating (servers) in the US.
Not much in common with this venture anyway.
Also, Megaupload was in violation of existing US law. Until btc has a legal status (is declared legal or illegal)
there is VERY little leverage US has to shut down this business in France.