How is the use of RDF beneficial to improving data privacy and ownership?
One answer is that, in RDF, each user is in control of the meaning of their own data. The current system takes our data, accumulates it in a central place and derives meaning by running non-transparent algorithms on it. In Solid the meaning is coded in the data in a standardized way that any app can interpret. The role of the outside app is not to derive the meaning on its own but to read the meaning from the data. Rather than non-transparent algorithms, RDF exposes the meaning of all terms.