But on the flipside if consumers aren't ready for it the thing will flop, hard. That's what happened with Blu-Ray and HD-DVD. People act like Blu-Ray won, but in reality they both lost to DVD for a decade. Blu-Ray eventually took over in sales once people were ready, but by that point we were only a couple years away from streaming taking its place.
Whether or not the console makers are ready or have it designed is, frankly, more irrelevant than I'm sure they'd like to believe. They need to time it right or it won't matter.