I think if anything's going to save us from a generalised AI takeover it's this. Even if encrypting the world doesn't stop them it'll make computation too slow for world domination.
There are a million different ways we're imminently hurtling down an empty abyss, and obviously if I was an inundated Texan or a general I might be more concerned about the environmental or nuclear apocalypse, but as a programmer the Cloud apocalypse is what concerns me the most.