As someone who has worked at meta in privacy, I don't think this would be hard to figure out for a small startup. The issue is that you can't share data between different apps, which is not a problem a small company would have since they wouldn't have multiple apps to begin with.
Meta, on the other hand, has data intertwined between Facebook, Messenger, Instagram, and other platforms. Plus, Meta's internal bureaucracy and ownership model is an absolute hellish mess.
Meta, on the other hand, has data intertwined between Facebook, Messenger, Instagram, and other platforms. Plus, Meta's internal bureaucracy and ownership model is an absolute hellish mess.