Wow, that was a slog through some pretty crazy reading! I find it sad that there are so many misconceptions on what open source is.
First, I recommend reading this:
Conveniently, you can read it all online, or pay O'Reilly for the ability to get it on dead trees.
Secondly, I recommend reading how version control works. There also seem to be massive misunderstandings about that as well. Here is a decent summary as well as some follow-on material: