I told this story as a reply before, but I think it's worth sharing on the main feed:

I remember the time (ca. 2005) when I installed a very early fedora build on an idle desktop PC at work. I had been using it for a few weeks when the head of IT found out and told me to shut it down. "We don't allow Linux on our company network," he said.

About 5 years later there was a new policy and we were all given laptops for use at home. "What's the O.S.?" I asked the head of IT as he handed me mine. "Windows," he told me. I gave it back to him ... "I'm sorry, I don't allow Windows on my home network."

He hadn't a clue what I was talking about, but it felt good.