Why Has Proof-of-Activity Not Been More Widely Adopted in the Cryptocurrency Market?

Proof-of-Activity has not been widely adopted primarily due to its complexity and the dominance of more established consensus mechanisms like Proof-of-Work and Proof-of-Stake. The hybrid nature of PoA makes it more difficult to implement and maintain than single-mechanism models.

Additionally, the network effects of PoW and PoS are strong, with large communities of developers, miners, and users who are familiar with these systems. The perceived benefits of PoA have not been compelling enough for most new projects to choose it over the more proven and well-supported alternatives.