tl;dr:The biggest task regulating large tech companies is to decouple platforms e.g. Apple's App Store and data aggregators e.g. Google. Ben highlights the difference in how they operate, monetize and the incentive hierarchy around each.
tl;dr:Proposal that ad-sponsored platforms such as FB should be government regulated, whereas other platforms should be market regulated. The underlying delineation is that problematic content is not built into the pricing model of an ad-sponsored platform.