I don't see why they think it has to go...
Maintaining macOS Server isn't that hard for them. It's not like it actually does very much (which they acknowledge by pointing to so many poorly resourced but brilliant open source alternatives, much of which theirs is based on). It is a part of the market that only competes against the cloud nowadays, so would take very little investment to make 'a thing'; such as partnering with other software vendors like Atlassian to build a suite that small companies really need (I never saw a company buy macOS over SBS, it was more like they would use it over gmail. Not everyone 'just' wants to use cloud based services (many are wary of getting locked in to the Borg, MS or anyone else) and putting all your files in the places that don't belong to you is not something everyone actually wants to do.
But the cloudy types at Apple are getting all the oxygen so they are dumping something that is actually very good, even if it needed some love.
My Mac mini server has run for 7 years now. In the beginning I setup a mirror RAID 1, easily possible using their old AppleRAID (and mdadm) at the CLI, very easily. Apple never chose to even support AppleRAID on the mini, despite it working so well. I even made it support the OS's DRP. The array ran 24x7 for 5 years, supporting two guest VMs, a database and two webservers, all on 2 500GB 2.5" HDDs.
Never halted. Never failed despite not having ECC memory.
Then I swapped it to an SSD and a HDD (no RAID), and it still runs flawlessly. Not even the fans have failed, and the OS is supported as well as it was on day one with very little effort to maintain on my behalf (I hope).
What a tremendous piece of work, Steve Jobs. So what to do? Scrap it.
Not very smart, Apple. Eyes are all off the ball in terms of security and real product now. All hands are instead on making hot air in the upper atmosphere instead. It'll bite them in the tail, IMHO.
Biting the hand that feeds IT
