Which ones are you thinking of? The nice thing about git is that it doesn't really require much of the server. I run my own "git hosting" with linode, apt-get

Which ones are you thinking of? The nice thing about git is that it doesn't really require much of the server. I run my own "git hosting" with linode, apt-get, and ssh. Most of the solutions for immutable big data don't have that level of convenience, as far as I know. Anything which requires a lot of sysadmin and ops work will eventually become a commercial cloud service... git on the other hand is useful by itself, and good companies can obviously be built on top of it as well.