I do a lot of systems engineering-level work on Linux and was surprised to see this title. The paper talks about how corporations behind commercial operating systems exploit their position and suppress user choice and use other shady tactics.
The title of this paper is a bit inaccurate it should at least say "... commercial operating systems".
I recall a moment in history when ffmpeg had some infighting and some dinguses forked off, followed by Ubuntu moving packages over from ffmpeg to said fork in its repos because the package maintainer was one of the dinguses.
So no, Linux is not innocent of the crime of corralling users towards its own interests.
EDIT: Was the distro Debian? It's so long ago my memory is foggy, but it was one of the two.
The title of this paper is a bit inaccurate it should at least say "... commercial operating systems".