Probably in those islands there are facilities about taxes and easier regulations for societies. The same happens in Liechtenstein (UM) and in Monaco (Hop). In S.Marino there is a similar situation as well. I wouldn't be surprised to see an international sim to come out of S.Marino. Probably, "Prima" itself may consider to offer an international sim: this could turn out to be interesting, but first of all we have to wait for it to start completely with their first services
