Maybe. There are lots of rumors flying about but thinking about it wouldn't surprise me that much. It's complex, data hungry (meaning it works best when you have vast archives of stuff) and a little hard to get your head around. I know of only 4 places that actually use Final Cut Server (...not own it, or just installed it to test it out...but actually use it and rely on it daily).
My experience could be lacking though. It's hard to get reliable numbers on units sold et al.. but it's all just rumors anyway. I think Final Cut Server is pretty cool but its usefulness is limited to larger clients in my experience.