Filipe Espósito, writing for 9 to 5 Mac:
Microsoft tried to launch its xCloud game streaming service on the App Store for iPhone and iPad users, but Apple rejected the app due to its strict guidelines. Now emails revealed in the Epic vs. Apple trial on Wednesday show that Apple even removed a similar app from the App Store after its existence was mentioned by Microsoft.
Situations like this will always be a problem in the App Store. We need an alternative method for installing apps on iOS.