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The bigger danger is the response by android developers. Will you invest in a soon-to-be-deprecated Android Native app written in a soon-to-be-deprecated API (because, at least according to the Internet rumors, Fuchsia will be using Dart instead of Java and will have a totally different API), rather than just write it in Xamarin, Cordova or React Native?
And once your apps aren't written in Android API, how hard is it to port to, say, Windows Phone?
This damages their moat.