Data they could have acquired directly from FB anyway? It seems like they found a way to make the data acquisition process more efficient (while also violating FB's TOS, which is the actual problem here).
But the point is, the methods CA used to influence voters weren't significantly different from Obama's 2012 campaign.
Didn't Obama's campaign hire Droga5 to do precisely the same sort of ad targeting that CA was involved in? Ultimately, it doesn't seem that CA did anything out of the norm for any marketing analytics company (from what I've read, correct me if I'm wrong).