Top of this list used to be particular versions of Ubuntu
Summary: GNU/Linux "market share" in Steam grew by a quarter this past year, boosted by SteamOS perhaps, but watch the trends in distributions; even the Ubuntu-based distros aren't near the top (and SteamOS moved from Debian to Arch, so expect Ubuntu to stagnate further)
At times it seems like what we deal with are many weak patents (on algorithms), valuations or speculations based on hype ("hey hi"), and stocks held by Microsoft and its own staff
As noted a few days ago, several times in fact, many people now recognise the importance of the FSF's mission, even if most people don't know what the FSF is