Why is Kusama valuable?

Could you elaborate on the reasons behind Kusama's value? What unique features or benefits does it offer that set it apart from other blockchain platforms? How does its innovative approach to network governance and experimentation contribute to its overall value proposition? Are there any notable projects or collaborations that have helped to drive Kusama's adoption and value appreciation? I'm curious to understand the factors that have made Kusama a valuable asset in the cryptocurrency and blockchain space.