Well I'm not trying to argue against one being written, just that once it is written, it will still not be what it was made to be.

LinkedIn is defined by its user base of recruiters and corporations, which draws in professionals seeking jobs. It becomes a cycle, but importantly for this conversation, it is controlled by recruiters.

This is in contrast to any other social media where regular people draw in more regular people. A FOSS LinkedIn will not only have the network effect to fight, but it will also be up against the will of corporations, not just the slow buildup of users.

I guess another way to put it is a FOSS LinkedIn cannot grow with a few users joining here and there. You have to convince Amazon to move over first.