"No one uses Linux for servers because it's not very good"
What? in fact "Linux has now climbed to 13.4 percent of the overall server market, with Unix at 7.7 percent and Windows at 36.5 percent."
So Linux is just under half of the Windows share. hardly insignificant.
"Linux is free, but there is no such thing as a free lunch"
When I overheard this I was torn. I believe there is no such thing as a free lunch, but in the context of the overheard conversation, it is free.
Free to use, free to add to, free to edit. Free as in freedom. You might want some support though. I'm pretty sure you would need to get some support for your windows network too.
"No one in their right mind would support Linux"
Arggh. Red Hat, Novell, the list goes on. there are entire (huge) companies built on the foundation of supporting enterprise Linux. Some with backing from MS (for better or worse)
"Linux just stole all of their stuff from Microsoft, might as well use the genuine article"
Linux was released as a kernel in 1991. Along with GNU it rapidly became a solid OS. Unix is even older.
In context, windows 3.1 didn't come along until 1992. There is no copying going on here. Desktop paradigms have not changed in 30 years.
I hope you read this. You know who you are.