Centralization (server based) vs decentralization vs distribution (p2p). From more power and consistency vs less power and freedom. No one controls the network. Objective is to eliminate the third parties. 

In a globalized world the centralized supervision becomes more and more risky, and this affects both governments and big companies. 

Attacks in single nodes could make the whole system to fall. Decentralized networks have disadvantages vs distributed. They still can be corrupted by single nodes.

The key is the ZERO TRUST approach. Trust is no needed since there’s no one to trust.