Apple actually has a gaming platform called Apple Arcade and gaming is a separate and prominent category in the App Store. They do "game of the day" and editorials all the time, there's a platform called Game Center that can be used as an account between devices and a place to keep scores.
Their graphics performance on iPhones has been top of the line for many years now, they always boost about the graphics performance of their devices they have game demos and game introductions incorporated into their product announcements and finally they introduced game controllers support in the latest OS.
I don't know what else they need to do to target gamers. RGB LEDs maybe?
