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by rglullis 1111 days ago
We can do that since the late 90's. Skype was p2p and worked very well.

The problem is social, not technical. A p2p network will have problem with reputation and moderation. Only the super technical people will bother to deal with trying fighting scammers and trolls. The only alternative would be something pay-to-play to make it costly, but then those people paying will also want the conveniences and benefits provided by a system with some central authority.