I think ESR started ForgePlucker to tackle this problem. It's a project for saving "project state" from various project hosting sites. Here is the announcement: http://esr.ibiblio.org/?p=1369
Stopping it now would be very stupid for the exact same reasons listed: The cat is already out of the bag. If you don't allow collaboration now, you -guarantee- that any forks won't end up like the mainline.
The idea is to keep the information open, free, and interchangeable as information is what these sites add. We've had public VCS repos and web interfaces for ages.
I don't buy this excuse. Atlassian is anything but struggling. github and gitorious have an impressive array of enterprise customers. The longer this concept is postponed, the harder it will be to implement as similarities will diverge.
Your headline made me think you're asking for VCS stuff to be added to the diaspora project (the social network one).
It seems I misunderstood you.
Anyways and either way, this seems like a (proposed) solution looking for a problem. I'm an avid user of various VCS systems and have never felt a need to port my "followers" or such from one system to another. What exact problem are you looking to solve?
