It's about policing the Internet..
Let's say that there's a file. It'll Legal to have it and own it in one country, but not in another. So let's say said file (Video, picture, rom, whatever.) was made in the legal country, put up on the internet, and downloaded in the country where it's illegal.
Where would the jurisdiction for this lay? O-o..With the Parent country or the download country.
it all seems..complicated.