Governance on Ethereum
Ethereum governance is the process by which protocol changes are made. It's important to point out that this process isn't related to how people and applications use the protocol - Ethereum is permissionless. Anyone from anywhere in the world can participate in on-chain activities. There are no rules set for who can or cannot build an application or send a transaction. However, there is a process to propose changes to the core protocol, which these applications run on top of. Since so many people depend on Ethereum's stability, there is a very high coordination threshold for core changes, including social and technical processes, to ensure any changes to Ethereum are secure and widely supported by the community.
Source: ethereum.org