I was meaning maybe as in it's their rights to license it anyway they please and retain full rights to their data. For instance, if they wanted to, they could u

I was meaning maybe as in it's their rights to license it anyway they please and retain full rights to their data. For instance, if they wanted to, they could upload an album of pictures as Creative Commons, or if they wanted retain full copyright. My point is, it's your data, you can do whatsoever you wish with it, including delete it all.