The best example is that you cannot install Chrome through the app store on MacOS. In its place? A bunch of garbage apps that people install thinking they're Chrome. So much for quality control.
Millions of users have braved the risky, buggy and deadly internet to install Chrome as a result of this. Nobody cares.
Tell me, if millions of Mac users can download apps successfully, with little malware, why is it the phones need all the protection?
We all know the real answer involves 27-30%.