1. Private data / Linked Data
This is the data contributed by the user. Shopping data for example. I think the EU data laws are meant to guard this. I think it is both unethical and illegal to sell / publish primary data without the user's consent.
2. Public data
In social networks you also get interaction data, which the user had made public. I don't see any reason for companies not to publish this. Right now people use crawling to get this data.
3. Insights
This is the data generated by ML and statistical analytics.
By open data I mean user should be able to get a dump of all three and the organisation should? publish 2 openly and 3 if it wants to openly as well.