Most of those concerns though are covered by "failure of an entity" -- which could be inherent through bad business practices, or it could be regulatory.

A quantum computer breakthrough that destroys BTC does really fundamentally cause BTC to fail as an algorithm, which is a bit higher level.

I don't think that is likely, and we don't really have AGI, although LLMs are great for certain kinds of queries and polishing language or doing boilerplate coding.