Years ago, we abandoned Macs in our datacenter when Apple neutered OS X Server and gave us no alternative. Windows is now king there.
Now we are seriously considering abandoning Mac for, of all things, our Prepress department. Why? Because for the last three years, macOS has been become almost unusable with network shares with a large number of files (anything more than a few thousand). Think minutes, at times, to open an f-ing folder. It is a known bug. It has been around since 10.9. Apple has not even acknowledged the problem. What takes milliseconds on Windows can take anywhere from 30 seconds to two minutes on a Mac. The problem exists regardless of share type. SMB and AFP are equally bad.
We are as core a user as it gets. Prepress. Graphic arts. And Apple is unable to make a Mac work efficiently on something so obscure as a file share. They have made it quite clear that they do not care about power users like us, and they are never going to care again.
We have work to do. Browsing a network file system is a basic service. It should not be difficult. It should not, as it currently is for us (and an untold number of others), cut our productivity by half because our users spend so much time just trying to open a file.