On Monday, a U.S. District judge ordered Alphabet, Inc. (NASDAQ:GOOG)(NASDAQ:GOOGL) to open its Google Play Store to competitors, making it easier for developers of mobile app stores to compete on Android phones and tablets. The Details: Judge James Donato issued his final ruling in Epic v. Google, ordering Google to distribute third-party app storeswithinthe Google Play Store. The judge also ruled Google must give third-party app stores access to the full catalog of Google Play apps and allow developers to link to app downloads outside of the Play Store. Read Next: What Happened With Vistra, …