This is far from try any longer. My current employer is about 75/25/5 OS X/Windows/Linux for end user machines. The Windows boxes are used by the business types

This is far from try any longer. My current employer is about 75/25/5 OS X/Windows/Linux for end user machines. The Windows boxes are used by the business types, while the devs and designers use OS X. The prod systems are Linux, and the devops are also Linux. This is for a Fortune-500 company.