Honestly, with PS3 / X360 purchasing rates per user declining steadily over the past several years I really can't see Move or Kinect reversing anything, as those items will only sell to 20% of the base or something by the end of 2011.
Microsoft doesn't give shipment figures, but for PS3, purchasing rates are trending down fairly quickly, as is always the case once purchasing rates get to 3 games per user or so.
FY 3/2009 - 4.56 games bought per PS3 user (103.7m / 22.3m)
FY 3/2010 - 3.24 games bought per PS3 user (115.6 / 35.73m)
FY 3/2011 - Trending for 2.65 games bought per PS3 user (135m / 50.73m)
FY 3/2012 - 1.7 - 2.1 games per user * 63m users? That'd be 120m games bought (120m / 63m = 1.9)
Hard to say exactly, but after you get below 3 games purchased per FY, the drop off is usually pretty steep.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
