Earlier quoted context omitted.
Government could hold the keys. Sufficient weird behavior should also trigger release.
You really want to trust the government with keys to the kingdom? Like what they wanted here? https://en.wikipedia.org/wiki/Apple%E2%80%93FBI_encryption_d... And no, I wouldn’t trust an EU government or coalition any more than the US or any other country
I don't know to what extend you could do a key update on illegitimate released. It seems you have bigger problems to worry about at that point.
To do it earlier you could have judges sign for release and require one or more judge keys to decrypt the vendor keys.