How so? FS-level sharing is easy to use (it's just a drive that's the same on everyone's machine) and the workflow is a lot more efficient if you're using a conventional application to edit the files. It performs pretty well, and integrates nicely with AD/Kerberos for security. As long as there's a decent versioning/backup policy in place (which can be handled by the server admins, users don't have to worry about it) what's the problem?