Not really, Windows and Mac only show warnings for unsigned applications, and the policies for signing don't include revenue sharing with Microsoft or Apple. A

Not really, Windows and Mac only show warnings for unsigned applications, and the policies for signing don't include revenue sharing with Microsoft or Apple. Android of course has an app signing system which could be used the same way to verify the authenticity of third party app downloads, but Google chooses not to protect users in that situation the way that Microsoft or Apple do. They do have Google Play Protect which scans all apps regardless of installation source but as far as I'm aware they don't go out of their way to confirm to the user that they are installing the real Epic Games Store.