A few weeks ago I ran a 3 day event at Vistaprint. We had many engineers fly into our organization. These engineers are from both other countries, and even other companies. We essentially had a mini 3 day conference, and I had to run it! I learned quite a bit about running a conference.
Over the last 8 years the demand to scale has ever increased.
We have gone from curating machines like your favorite pets, and started spinning up, and destroying VM's at an ever increasing pace.
As engineers the Unix like platforms, have always been easier to work with. Personally I enjoy linux, I love package managers, I love ssh, and configurations are much easier. That being said, lately I have been interacting a lot with Windows servers.