You assume to much Rol.
Every gen is different anything can happen, wouldn't surprise me if the 3DS bombed and another handheld came and stole the handheld crown from Nintendo.
And I highly doubt Sony is going to do the same this this gen for next gen, as we all seen the first couple years of the PS3 was not the best launch for a video game console. Sony will likely go back to there roots like they did with the PSOne and PS2, come out with something affordable at launch with some cool new features and awesome games.
Microsoft is taking a complete different leap with Kinect, who knows maybe that'll be a hit and the X720 will be based completely off that.
Like I said every gen is different, anything can happen and you can't predict nothing.







