[chatmasta]

"You can do this with open source, X, Y and Z" is the classic initial criticism of successful companies. What critics forget to consider is that 99.9% of people do not enjoy doing complicated things. If private calls were as easy as public calls, why wouldn't someone make a private call?

I think there is even an XKCD for this phenomenon.

[rakoo]

In these situations I'm always reminded of this answer to the "Show HN: Dropbox" (https://news.ycombinator.com/item?id=9224):

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. From Windows or Mac, this FTP account could be accessed through built-in software