[hunterjrj]

Interesting idea.

How would ownership extend to metadata derived from your profile? For example, one of the claims made during the Cambridge Analytica hearings was that the data that they had in their possession could be used to derive political leanings, sexual orientation, purchasing habits etc.

I'm certain that this is where the value of the data is. No platform genuinely cares about cat pictures and birthday wishes - they care about how likely you are to purchase an advertiser's product. Or, cynically, they care about how many degrees of separation you are from a person under investigation.

This is not data that you've created directly or intentionally.