Personally, I don't think it is realistic to expect more than a 25% improvement year-over-year in sales from any not supply constrained console that has been released in all regions; if the PS3 improved its sales by 25% every year it would finally hit 100 Million units in 2013.
If you assume this pattern of growth for the PS3 (which is a lot like most non-dominant console lifecycles):
- 2008: 10% improvement over 2007
- 2009: 10% improvement over 2008
- 2010: 10% reduction from 2009
- 2011: 25% reduction from 2010
- 2012: 75% reduction from 2011
The PS3 will break 40 Million units by 2013.







