This oversimplistic explanation misses the facts, laid out to some extent in Stephen Walli's history which is mentioned elsewhere on this page, that the "propri

This oversimplistic explanation misses the facts, laid out to some extent in Stephen Walli's history which is mentioned elsewhere on this page, that the "proprietary software" comprised GPL-licenced things like GCC and many BSD-licenced things including large portions of the command-line toolset. Actually reading the licence dialogue displayed by the SFUA/SUA installer was interesting: umpteen different iterations of mostly the same BSD licences, over and over, with the only differences being the copyright declarations.