FB vs CA
When this story broke over the weekend as "Facebook confirms Cambridge Analytica stole its data" it sounded like spat among two equally creepy companies. Contemplating the political blowback, however, it seems they're arch-rivals.
FB, like Google, is a left-wing partisan company now loathed by the right for using its internet supremacy to suppress conservative / libertarian viewpoints. CA has (apparently exclusively) supported conservative / alt-right / nationalist causes. Both raise concerns about just who is pulling the strings.
One might say CA pulled one over on FB, using its own social-engineering weapons to score huge victories for the anti-establishment right. (Or for the new overlords...?)