It is hard to say how many people really own a DS...they've sold like ~700m games through Dec 09 for it. So if you just divide that over the systems shipped, its a 5.6 attach rate or so, but if there 25 million DS owners who have two DS rather than one then the attach rate is more like "seven games per owner".
The model split is something like 90m DS Lite, 25m DS Phat, 10m DSi to date - so I think its fair to say at least 100 million individuals own a DS. If that is the case it should be able to breeze past 150m, as maybe a quarter of those users have more than one DS, and the potential for the system is probably at least 130 million individuals.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
