[Prof Yaffle]

It will always be open source. It is what it is, you can't change it - that's the point of the licence under which the code was released. If you took it closed source, any of the contributing authors (750+ of them) - indeed, anyone at all, I believe - could pursue action accordingly.

The rest of your questions, whyever you're so keen, are probably answered in one of these:

https://kodi.tv/about/xbmc-foundation/

http://kodi.wiki/view/Official:Trademark_Policy

https://www.gnu.org/licenses/old-license....0.en.html