Yes, I don't think anyone is saying that this is unique to Facebook — they just get the most attention by virtue of popularity and profitability, and having lied about what they knew and when in various related areas. Ignoring the question of the exact effects of all of the political use of social media in the previous decade, that simply happening to the degree it did guaranteed that they'd get a lot more scrutiny.

I definitely agree that there isn't a proven solution for this problem — that's normal for major technological changes. We saw the same thing with printed books, magazines, and newspapers; radio; TV; the internet; etc. — not to mention things like cars which weren't communications technologies but definitely had major impacts on society. I think the best thing we can get right now is more of the data companies like Facebook and Google tend to avoid sharing, especially after various governments experiment with rules and it becomes possible to see what does and doesn't work.