Earlier quoted context omitted.
I'm sure it stings a lot! Windows Server is expensive, and a huge money earner for MS. They currently have around 20% market share (as Internet servers - much higher inside business LANs), which is a very nice chunk. And I'm sure encourages them to keep working on it. Frankly the tooling for MS server keeps it in the hunt - they really understand the concept of making things easier to use.
> They currently have around 20% market share (as Internet servers - Extremely big doubts about this. How would anyone even know? All the hyperscale datacenters built by FAANG must be 99.9% Linux, and those DCs alone would probably be enough to make 20% impossible to hit for windows.
(Scroll down to servers)
Incidentally this is public facing Internet servers. The % -inside- enterprises us much much higher.
Tools like Active Directory allow you to scale enterprise operations, which is important for companies that have hundreds-of-thousands of desktops etc.
In any event your estimate of 99.9% is unlikely. AWS offers Windows based EC2 instances, and one presumes they're not doing that for 0.01% of the market. Azure will likely have an even higher %.
From the data though, not just guessing, I'd say it's about 20% overall.