Hi anons, marketing fag here.
One thing Q hasnt mentioned but plays big with FB is Oracle.
FB gets most of their outside user data from Oracle. They have a direct partnership.
As one executive told me, "Oracle knows everything about everyone."
In 2017 when FB got in trouble w Congress for their advertising practices, they publicly stated they were sunsetting those rules. In-house, however, they continued to target demographics, use outside data sources, and allow business users to export end user data.
Facebook has a very different set of practices for their "partners."
Oracle is a major driving force behind those practices. I don't want to say anymore, I've prob already said too much but if you want to dig FB - focus on their advertising and specifically, Oracle.