Not every country people can enjoy a quality level to afford Apple computers, even with IT salaries.

Why do you immediately jump to the conclusion that the parent was referring to just Macs?

Because I have seldom worked in environments that allowed anything else as desktop.

UNIX derived OSes tend to be relegated to the server room, accessed remotely and live on their own network.

Fair. But I was commenting more on the environments that historically were served well by AD (offices) are growing in use of Apple computers.

[Citation Needed]

I can believe that this is a true statement inside the reality distortion bubble around SV, but here in the real world I'll need to see some evidence.

The problem is that you're assuming I'm in SV, I'm in a small Swedish city and I'm seeing our _very_ windows heavy company starting to adopt Apple computers.

And when I think of the companies I worked for in London they were also increasing the Apple quotient of desktop/laptop machines.

Yes, this is anecdatum but I really can't tell you how strongly integrated Windows is at my company and we're still seeing adoption of Apple computers.

Regardless of that, Sysadmins and Developers tend to get to choose their OS at most sensible companies. (Every company I've worked for, barring the current, has allowed Linux; most even encouraged it)

MICROSOFT went heterogeneous client for their AD. I'm sure others can.