Z:gnu-www-ja-google-engineering-talk--6e8035-The biggest example I know of/en

The biggest example I know of is the X Window System. It was developed at MIT in the late '80s and released under a license that gave the user all four freedoms, so if you got X in source code under that license, it was free software for you. Among those who got it were various computer manufacturers that distributed UNIX systems. They got the source code for X, they changed it as necessary to run on their platform, they compiled it and they put the binaries into their UNIX system, and they distributed only the binaries to all of their customers under the same license as the rest of UNIX -- the same non-disclosure agreement.