I'm sorry, that just wrong. Gupta-Kumar capacity scaling law (2000) says that as you add participants, each participant gets less bandwidth, until it becomes impractical. Imagine a room with 10 people talking in it. Easy. Now imagine 10,000. Hard to have a conversation if it's still all ad-hoc.
Whatever you are trying to accomplish, you have to remember that all tech is predisposed on a functioning society with cooperative people to move your packets from A to B.
Tech cannot solve the problem of Trust. Quite the opposite. It amplifies to immense degrees. In short, if you're looking for tech to save you because your Government is doing something shady, you're at the wrong level. Tackle the government.
Sad, but inevitable.
Now if you have too many leaches and not enough contributors then you get a problem, but that’s not the same as a single point of failure.