Note that facebook has all this data freely available. They probably run very similar analyses.
But they don't act on them, or publish their results.
Lack of access to this data is a big problem for social media researchers that needs to be solved.
But the simple fact is that any high profile analysis of this data will simply further fuel debate about facebook overreach and harm facebook's business.
Why would they love to do so considering this will end up being detrimental to Facebook's profitability and thus their compensation and/or promotion opportunities?
Any study on Facebook data would generate several papers in good publications, great for the more scholarly inclined working at Facebook