I doubt there is much overlap between the hardcore gamer market and Apple anyway.
So now it is totally possible, you just must avoid iPads (face palm)
Essentialy Apple want force me buy some android tablet, smart move...
Does iPad even support Xbox1/PS4/steam controllers? Last time I checked, at least PS4 gamepads did not work on ios. Without those (certainly Xbox and PS4 ones), I’m not sure I’d want to stream games onto an iPad anyway (not that this makes it better, if anything it makes it worse).