The Debian Free Software Guidelines is a set of guidelines that the Debian
Project uses to determine whether a software license is a free software
license, which in turn is used to determine the section of the repository a
piece of software enters. It has *nothing* to do with the rights of people
making a derivative distribution. The same holds for the Free System
Distribution Guidelines.
Your mapping between the sections of Debian's repositories and those of
Ubuntu's is wrong. In particular, software in "universe" does not depend on
nonfree software. It is not in "main" because Canonical Ltd. does not
support it. That is the difference. See
https://www.ubuntu.com/about/about-ubuntu/licensing
I agree with onpon4: please stop writing bullshit on this forum.
