Not downloading apps that are out of Google Play market would suggest that an app CANNOT link to a paid version of the app on Amazon App Store ? (I cannot publish paid Google apps from my location, but I CAN publish paid apps on Amazon).
I assume the restriction is on direct linking - which could inadvertently expose users to viruses etc.
However if we just say or advertise in our apps that “please download paid version from Amazon Market” without direct linking (though the conversion rate will be TERRIBLE) - would that be acceptable ?
This is odd - that you can point users to products to buy on Amazon (earning affiliate revenue) since it is a product not available on Google Play etc. and is a physical product - vs. a paid app on Amazon.