You can provide a more general answer. The Kogan issue is rather specific.
When you want information from a variety of databases, you have to get it. It isn't simply available; you have to acquire it, so you need an agreement with the data provider.
The issue is multi-faceted. Does the owner of the data initiate the transmission of the data? Facebook, for instance, has datasets. Does it give you access to those data, either loaning or giving them to you? Does someone buy the data? Are the data obtained by hacking?