Some people say Second Life world is not open source, so Gaz' and her works are, in some way, owned by Linden Lab. I usedd to think that if you are able 'read' some digital data, sooner or later, you'll be able to save a copy to your disk and run it, in some way. Actually, all my works, my shoes and me are saved offline on MySQL databases, and thanks to OpenSim they can run in many different ways, with or without Internet connection. That's All Software Folks!