What is a successful DAO?

Could you please elaborate on what constitutes a successful DAO? I'm particularly interested in understanding the key characteristics and metrics that define its success. Is it primarily measured by the number of active contributors, the amount of funds raised, or perhaps the impact it has on the broader cryptocurrency and finance landscape? Additionally, how does a DAO maintain its success over time, and what challenges does it typically face? I'm eager to gain a deeper understanding of this emerging concept and how it's shaping the future of decentralized organizations.