In the EU, GDPR makes it clear that as the user, you own the data. Companies are legally required to allow you to export your data, also in part to create more competition among platforms.
No idea about the US, though, where social platforms seem to sometimes come with clauses that make users waive their copyright (which would be unenforceable in Europe).
No idea about the US, though, where social platforms seem to sometimes come with clauses that make users waive their copyright (which would be unenforceable in Europe).