With Cambridge Analytica, the customer data wasn't used by any government, but by a political party. To me, this really is the legitimate status quo of advertising. As a US citizen, it's not clear to me why this is wrong or bad, only that people "don't like it."
I for one am grateful that these services target me with relevant adds. Is that something we want undo? What is the strategy here? Is the objective to be less informed and be directed to information that is non-relevant to our interests?
Now, I'm not saying that the ideal utopia wouldn't be a Facebook-less interlocking combination of privacy respecting, free open source software, decentralized networking, and federated identity. I just feel weird how it seems like "fears of election interference" and "muh democratic system" are being used to effect arbitrary changes in how Facebook does business.