Failure atlas
Governance capture
A vote is a mechanism. It is not a guarantee of a good decision.
What to keep
Token voting concentrates with the tokens. Delegation concentrates with whoever people delegate to.
A treasury, a parameter, or an upgrade key that a small set can move is a governance surface, whether or not the word DAO is used.
This page does not pick a scandal. It names the shape of the failure.
What this is not
Not a complaint, not a price chart, and not a complete history. Primary sources outrank this summary.