Okay, Sounds resonable. Lets just say that they only conragate with each other during the day. At night the meeting places are empty and they patroling the land mindlessly, only attacking if your not one of them.
That still wouldn't happen. How would anyone possibly know who
else is a werecreature, just because they are? Even if they did, trying to have any kind of meeting would be a bad idea. Known lycanthropes are killed on sight, they're not going to advertise themselves. People with that curse, if not driven outright insane by it (which many are) tend to be very distant loners, far away from society, for the safety of themselves and/or others. Only a scarce few would lead a double life with it, since those timely disappearances would get rather suspicious.
All those factors aside, I don't see what they would need to meet for in the first place. "Hey everyone. So this curse still svcks, right? Right. See you next week." They're not going to have any joint needs/wants in their normal forms that would warrant a faction other than trying to stay alive, and grouping together would not help that. Even under the argument that other werecreatures would provide competition, that would make their own kind every bit as much an enemy.