Before we explore what the Play Store needs to copy from the App Store, let's discuss what it shouldn't. If there's one major way Google can differentiate its app store from Apple's, it's how you discover new apps and games. Right now, the Play Store is so difficult to use that it's easy to completely miss exciting new apps and games.

Ellsworth told the appeals court that U.S. District Judge James Donato improperly allowed Epic to turn the Google trial into a “do-over” that excluded the Apple app store as a rival in the market definition that led to the jury’s verdict in its case.