Network Centralization
Network centralization occurs when control over a blockchain, such as transaction validation or protocol governance, becomes concentrated in the hands of a small number of entities. This is a significant risk in Proof of Stake, where larger stakeholders may gain disproportionate influence over the network's direction.
Centralization undermines the core value proposition of decentralization, which is to create a system that cannot be controlled or censored by a single party. To prevent this, protocols often implement measures like stake caps, decentralized governance, and penalties for validator collusion.
Maintaining a diverse and distributed set of validators is essential for long-term network security and user trust. It is a constant struggle to balance efficiency with the ideal of a truly decentralized system.