Nonsense. I work for a fairly large university in the NE. We were an virtually exclusive Sun hardware/Solaris shop. Due to Oracle's behavior, we've moved wholly away on both hardware and software since they acquired Sun. Good riddance. I also know of an enormous urban school district (where I used to work and still know many people) that has done the same. While this is only an N of 2, I doubt we're all that rare.
I work for a University out west, and our story is the same as yours. We had a large Sun/Solaris presense... not anymore.