You caught the elephant. FTP is established and people know how to use it. And yes, kind of like IE6. I'm not saying that I personally wouldn't want something different (I do), but I know of nothing else as established I can easily give to IT departments. Command line I was referring to rsync. Try to explain all those cryptic arguments to some IT guys or worse a marketing department.

The world changes slow in some areas, especially slow in the enterprise world. That is the world FTP thrives (plus your average joe we hosted).