Servers serve hundreds, thousands and sometimes even more clients. Desktops serve one. As the Alexa report stated, the biggest web servers/farms disproportionately run unix/unix derivatives such as Linux.
You are desperately trying to justify the low market share for Linux.
Linux servers are still an instance of one server, which can also be done by a Windows server.
But, that’s not the argument when it comes to real market share of instances of an OS.
The big fact remains that, Windows OS has over 1.5 billion running instances, in consumer machines and in businesses.
Linux can claim the crown for number of servers using it, but, the most important crown is the number of people and businesses using an OS, and there, it is Windows that rules, big time. Linux has been trying to make headway into the desktop/laptop market for over 20 years, and each year, it’s market share remains the same.
I’m not saying that Linux is not a good OS, and I’ve actually installed a few distros on my machines, but, Linux has to be doing something wrong when they keep trying and losing. It might be a good server OS, but it’s not for the regular consumers or for most businesses.