https://www.theverge.com/2018/5/24/17392470/apple-rejects-valve-steam-link-app-store-ios-game-steaming

Valve’s game streaming service Steam Link won’t be coming to iOS today, despite a successful Android beta launch earlier this month. According to the official Steam Database Twitter account, Apple rejected the Steam Link app over apparent “business conflicts with app guidelines.” Steam Link was first announced for mobile back in March, and the app functions as a remote desktop so users can access their Steam library of PC games from a mobile device and stream them directly for touchscreen play or for use with a Bluetooth controller.

It’s not exactly clear at the moment what the “business conflict” here is, and whether it has anything to do with Apple’s somewhat contentious 30 percent App Store fee for all purchases, in-app or otherwise. It may perhaps be due to the fact that Steam Link allows an iOS user to access another app store, namely Steam, within Apple’s tightly controlled ecosystem. Apple was not immediately available for comment.