Well, count me outside that norm too. I work in a pretty corporate environment and nobody here uses Microsoft stuff. In fact, I've never worked anywhere where the vast majority of people weren't on a Mac.
In my job, each year I end up in dozens of meetings between corporate executives from different countries around the world. Nowadays, it is true that I see them bringing mostly Macs and iPads.
But this is, in my experience, a rather astonishing change from even 5 years ago, when 95% of the computers I would see these visitors bring would be Windows (and the majority of those still being Windows XP).
The Apple hegemony is still a pretty new thing.
If you are a web designer or creative professional I could see how this could be true for your team. My company provides people with a Dell but for those that wish you can BYOD. 98% of people use the company laptop.
But we still have Mac machines, because our customer data comes in in Excel, our applications are written to be compatible with IE8, etc.