I watch communities and organisations at work, and to a fair degree agree with you.
But my stance has often been, and largely remains, that of the outsider, despite the acknowledged penalty.
The best community I was ever part of I had to leave on an issue of truth. I couldn't lie to preserve the networking. Which takes priority, when values clash? I knew at the time of those who had chosen differently.
With individuals, and on particular poiints, I can work with others. But a sense of being at the heart of a community eludes me. So often it's that very lack of common ground.