The person writing this post also doesn't sell it.

This wasn't just for a download. This was for moving files generally.

See how it's an FTP transfer? As far as the system cares, it's like moving a file from one folder to another. And moving large files was huge back when you had a maximum drive size of 60 gigs in the OS, so you had to partition your large harddrives into like a dozen partitions and had to regularly move huge chunks of data to manage storage.