What's the consideration for this contract?
It pretty much goes downhill from there.
"Ice Nine" is a fictional assassination device that makes you turn into ice after consuming ice (?) https://en.m.wikipedia.org/wiki/Ice-nine
"Ice IX" (ice nine) is Ice III at a low enough temperature and high enough pressure to be proton-ordered https://en.m.wikipedia.org/wiki/Phases_of_ice#Known_phases
So here, Sam Altman is stating a death threat.