1. No, Apple is no threat to console gaming. With increasing resolutions and increasing 4G data prices(and eventurally increasing game prices), the average consumer(console gamers) can't afford an iPad as a gaming device.
2. Yes, next-gen consoles can't play it safe but they can't go all out either. We can not have a repeat of the $599 incident. Both Sony and Microsoft will need to either release a bare-bones model of their next consoles for cheap or just take a huge loss on a fully featured console. The choice is obvious.