According to reports, Valve Corporation's new Steam Link app has been denied entry to the world of Apple. A review team at the Cupertino-based company apparently rejected the application on grounds of "business conflicts with app guidelines." This has led to some speculation that Apple could be working on its own game-streaming service.
https://www.notebookcheck.net/Steam-Link-app-for-iOS-blocked-by-Apple.305812.0.html