1. A few years ago, Apple's phones were outselling Android based phones. It was the largest selling "smartphone" brand - with Android, Nokia, Blackberry and a few others trailing behind. Like just demonstrated, Apple is more of a "monopoly abuser" than Android. Where were these same antitrust regulators then?
2. Even then, the stickiness of Google Play monopoly is low. The banks and other organizations already advertize their Play Store availability on their main web pages. At the same spot they could make an APK downloadable - to which they still retain the copyright and all the means to exercise it, unlike some other distribution systems of mobile applications.