So support the business. Are you incapable of networking Windows, Windows Server, OS X, OS X Server and Linux in the same environment? Your business users must love you.
They do. Sure, have four different manufacturers for servers, that would be wonderful to support. Four different patch deployments, four different build CDs, and four different ways for a server to blow up. Pass. I’ll stick to one manufacturer and two O/S (Linux) unless there’s a compelling business reason, no sale. I could care less how my users think of me. All I care about is uptime.
You have yet to present a business case for using Apples’ products, just emotion.