It isn't an artificial market segmentation. Fibre Channel is a no compromise technology with a single purpose, to connect servers to remote storage with performance and reliability close to directly attached storage, and it does that really, REALLY well. It is by far the single most bullet proof technology I have ever used. In a parallel universe where FC won over ethernet and every Ethernet port in the world was an FC port I don't see why it would be any more expensive that ethernet.