I borrowed this from Rolstoppable in another thread. It gives you an idea of how long it took for the PS1 and PS2 to start making money and how quickly the PS3 is wiping that money out.
http://www.sonet.co.uk/SonyInfo/IR/financial/ar/Archive.html
Sony Annual Reports Game Operating Income
YearEnd Mar 31 Yen(B)
2006 8.7
2005 43.2
2004 67.6
2003 112.7
2002 82.9
2001 (51.1)
2000 77.4
1999 136.5
1998 117
1997 57
1996 (5)
PS1 era (1996-2000) made 383B yen. PS2 era (2001-2006) made 264B yen.
PS2 *was* (and still is) profitable, but not as much as the PS1. Sony sold PS2 for too little to make as much as the PS1, before the next gen. box came along.
For Fiscal Year 2007 and 2008
Q2 (96.7)
Q1 (29.2)
2007 (232.3)
So far the PS3 era (2007-now) has lost (358B yen). So, they have now lost all they made on the PS2 (including what PS2 made the last year and a half), and are working on losing the PS1 profits as well.
Still all together for the last 12.5 years, Sony is up 289B Yen . At 115 yen/$ = $2.5B.










