No Blockchain Is an Island

Much discussion is currently taking place concerning the nature and specificities of blockchain governance, but when we say "blockchain governance" we're really talking about multiple things.

While people often use the term to describe the mechanism by which the underlying protocol of a blockchain-based network can be modified or updated - in terms of both on-chain and off-chain governance - we focus here on a much broader question:

What are the various elements or forces that influence the governance of blockchain-based networks or applications?