Xbox 360 released November 16, 2005 in USA
Playstation 3 released November 11, 2006, in Japan
Original iPhone released June 29, 2007, in USA - superseded 5 times
The consoles are still competitive platforms. Nothing in the phone world lasts that well.
This is not a criticism of the iPhone, which is a brilliant device, instead a thought about the longevity of the consoles.