I agree; iOS devices are AMAZING game consoles. The problem I'm worried about is the one mentioned in [Ben Thompson's article][1]: that easily portable casual games don't differentiate platforms. If you can get Fruit Ninja on iOS, Android, and Windows Phone, then it's one less reason for you to choose iOS over any other platform.

Game consoles have always had their big-ticket exclusives; I'm concerned that iOS doesn't have enough.

[1]: http://stratechery.com/2013/casual-gaming-is-a-sustainable-b...