We define such sold media as owned media whose traffic is so strong that other organizations place their content or e-commerce engines within that environment.
If we accept as normal and unavoidable that everything in our lives can be aggregated, sold, or even leaked in the event of a hack, then we lose so much more than data.
Print media has been kind to J.K. Rowling. The Potter novels have sold more than 450 million copies through Bloomsbury in Britain and Scholastic in the USA.