When I started my current job, they asked me Mac or PC laptop and I said Mac. A couple days later a PC arrives. When I'm on the call with the IT guy to get things set up I mentioned I requested a Mac but PC is fine too and he said he never heard about my choice. Later I find out someone else on the team had the exact same experience, and we found out the preference WAS communicated. We've long since gotten a new IT guy and I'll probably switch to Mac when my current machine gets to three years old.