Judging from the types of questions asked during last congressional hearing to these CEOs regarding privacy(They didn't even understand that Android & iOS were

Judging from the types of questions asked during last congressional hearing to these CEOs regarding privacy(They didn't even understand that Android & iOS were from different manufacturers), I would be really surprised if they really understood the difference between having single Appstore with 30% fee vs allowing 3rd party Appstores, not allowing native browser engines and forcing them to use your own browser with different skin etc.