PS sold 1995-2006, Original Xbox 2001-2005. And don't forget the Microsoft/Nintendo/Sony are losing money on each machine only to make it up in game royalties

PS sold 1995-2006, Original Xbox 2001-2005. And don't forget the Microsoft/Nintendo/Sony are losing money on each machine only to make it up in game royalties (except for the Wii which actually sells at a profit), and games are still sold a couple of years after a platform is discontinued.