Aside from the hilarious description of Oracle [t=2107], it's worth watching "The Rise and Development of illumos" [1] as it discusses some consequences of signing away copyright on your contributions to an open source project.
Sun Microsystems released the Solaris operating system source code, but required all contributors to handle the copyright ownership on their code to Sun.
Then, shortly after Sun acquisition, Oracle closed the Solaris code and got away with all contributors' copyrights.
I find his speaking style extremely irritating. I can't take more than a few minutes of this. I'm sure it's full of substance, though. Perhaps there's a transcript somewhere?
I hope Bryan once publishes the annotated presentation? I'm also one of those who have problems following the narration in the video. Until then, I've posted a link to the slides here (see my other post).
[1] https://www.youtube.com/watch?v=-zRN7XLCRhc