We’re in a brave, new post open source world
Nadia Eghbal

You have totally skipped the contributions of Free Software Movement and the GNU project. The GNU Project started way earlier in 1984 when lead by Richard Matthew Stallman a team of volunteers started making a Free Software (Free as in Free Speech) clone of the Unix operating system. The operating system consists of a lot of parts, a lot of unitilites, low application programs and programs which are written written by combining those programs. Linux is the only the kernel which was included in the GNU/Linux operating systems in 1991. A kernel is a software which interfaces the hardware and low level application programs. A kernel is absolutely useless an Operating system and that is why FSF encourages people to call the OS GNU/Linux to give them due credit.