Otherwise we would be stuck with whatever Gargle or CrApple shove down our throats.
Apple now removes most features from their Server app so Nextcloud can be an alternative for some services too:
Maybe of interest for @jospoortvliet? They don’t list Nextcloud as an alternative, of course (wouldn’t have expected something else actually).
Yeah, I noticed. Perhaps we should blog about it, encourage people to try Nc as alternative 
Anyone up for writing a blog perhaps? I’m rather busy at the moment but I’d publish it with crediting the writer, of course!
Google is also notorious for culling features that aren’t trendy. I totally agree with the engineer in this article: