I don't think I agree. With a decentralised large community we just need decentralised structure for self-regulation. Communities are able to regulate themselves and can be any size. Then you can have communities of communities regulating themselves and so on.

I think where we are now, we have some communities and some are good and some may be struggling. What we don't have is communities of communities that help guide the communities struggling.

As soon as you start re-centralising power you are opening the door for corrupt individuals to profit.