A more direct source (possibly the original source?) I know of is a YouTube video entitled "LISA11 - Fork Yeah! The Rise and Development of illumos" which detailed how the Solaris operating system got freed from Oracle after the Sun acquisition.

The whole hour talk is worth a watch, even when passively doing other stuff. It is a neat history of Solaris and its toolchain mixed with the inter-organizational politics.

YouTube link: https://www.youtube.com/watch?v=-zRN7XLCRhc

Direct link to lawnmower quotes (~38.5 minute mark): https://youtu.be/-zRN7XLCRhc&t=2307