They own the app store. The don't allow competing stores or side loading. They own the app certification and charge a fee for it. They don't license any software or permit VMs. They broke Flash and keep their browser a generation behind so anyone trying to deliver a good user experience needs a native app. They block data collection because it hurts Google. They've been anticompetitive for years and everyone just accepts it. They're as bad or worse than Google or Amazon but coast on their brand halo to get away with it.