@ Sqrl

NPD LTD for the US:

Wii: ~11.4 million
360: ~10.7 million
PS3: ~5.1 million

Anyone know the July NPD LTD data for the PS2?

PlayStation 2 - 41,120,000 As of Dec 31st, 07

http://kotaku.com/346301/whos-winning-the-console-war-in-the-us

We just need to work forward now.

Edit:

LTD for PS2 should be 42,552,000

Corrected Stats using exclusively NPD data for consistency:

General Info:

8.08m PS2 owners have a Wii or about 70.88% of Wii owners.
7.66m PS2 owners have a 360 or about 71.59% of 360 owners.
4.26m PS2 owners have a PS3 or about 83.53% of PS3 owners.

NPD Console Data By Market:

Average Consumers

Wii: ~11.4 million - 41.91%
360: ~10.7 million - 39.34%
PS3: ~5.1 million - 18.75%

PS2 Owners

Wii: 8.08 million - 40.40%
360: 7.66 million - 38.30%
PS3: 4.26 million - 21.30%

Stats:

PS2 owners:

Are  3.60% less likely to buy a Wii than the average consumer
Are  2.64% less likely to buy a 360 than the average consumer
Are 13.60% more likely to buy a PS3 than the average consumer

Will upgrade to a Wii - 40.40% of the time they upgrade.
Will upgrade to a 360 - 38.30% of the time they upgrade.
Will upgrade to a PS3 - 21.30% of the time they upgrade.

edit: reformatted for clarity

Yay! If I wasn't on my Wii browser I would bring up some past posts of mine where I guessed a minimum of 60% of Wii owners will own (or have owned) a PS2.

This is interesting. Does anybody knoe hou this data was collected by NPD?

I get almost the same data

Taking NPD's figures:

41,120,000

+
January 264K
February 281K
March 216K
April 124K
May 133K
June 189K
July 156K

= ~42,483,000

~71.5% of 360 owners also own a PS2.
~69.0% of Wii owners also own a PS2.
~83,3% of PS3 owners also own a PS2.

Now it would be interesting to know what percentage of GameCube owners also own a Wii and what percentage of XBox owners also own a 360. Or IMO better even what percentage of all past owners (considering for instance the Wii is backwards compatible with the GameCube).

This I don't agree with, those PS2 owners who also owned a GameCube or XBox next to a PS2 have likely already upgraded towards a 360 or Wii due to reasons I mentioned earlier and are IMO far more likely to do so than those who didn't own a GameCube or XBox in the past next to a PS2.

Your February number is the PS3 number.  PS2 for February was ~352k.  Source

As for the GC and Xbox data I agree it would be nice but its not required.  The GC and Xbox ownership is a characteristic of the PS2 users at large, knowing the GC and Xbox data would allow us to give a breakdown to see how much it effected it but the overal less/more likely numbers would remain the same.  If you are willing to accept the validity of the NPD poll then the numbers are a natural conclusion.

I own a ps2 wii and 360.

28% gone hd console though :)

Where did you get this data Bod? Cause I wouldn't be surprised if NPD gathered this data a number of months ago which means you should use the install base at that time.