Well, now we know that once any putative superintelligence learns how to wave money around, we're doomed. All the preparatory "alignment" isn't going to save us from our own greed.
An apocalypse needs power. That power can be offering money to humans, but doesn't have to be: other (thankfully not yet existent) possibilities include hacking a single clanking replicator, as would offering rewards to unrelated non-human uplift project subjects.