Who is the owner of DeFi?

Could you clarify who exactly owns DeFi? Is it a centralized entity or a decentralized network of individuals? And if it's decentralized, how does the ownership structure work? Does anyone have ultimate control over DeFi, or is it a collaborative effort with various stakeholders? Understanding the ownership structure of DeFi is crucial in assessing its potential risks and benefits, so any insight you can provide would be greatly appreciated.