While those are real problems, this feels like the classic Dropbox comment "For a Linux user, you can already build such a system yourself quite trivially by ge

While those are real problems, this feels like the classic Dropbox comment "For a Linux user, you can already build such a system yourself quite trivially by getting an FTP account, mounting it locally with curlftpfs, and then using SVN or CVS on the mounted filesystem." Setting up XMPP and PGP sounds like a pain (almost everything to do with PGP is a pain). Even if you set up such a system, good luck convincing your friends and family to use it with you. I've had some success with Signal adoption but I suspect that XMPP would be a non-starter.