Parent sounds nothing like those comments. Whereas you see people saying, “just glue together some ftp, rsync, a little SVN, and you’re golden!”, my take on what parent is saying is, “we have offerings from Google, Microsoft, Apple, Joe’s Online Storage, what makes Dropbox special again?”
The picture you try to portray is “no wireless, less space than a nomad, lame” and that’s not the case at all, I think it is a question worth considering.