Japanese Marketshare charts, 1996-2007

[brute]

Nidan said:

Wow, that information suprised me. No wonder Sony launched the PSP!. So currently Nintendo owns more market share in Japan than Sony has ever held. I wonder what Sonys position in the market today would be if the gamecube was a success.

With the current success of the Wii and the DS, does it look like sony will have over 30% market share over the next 2 years? 

                           Sony           Nintendo

• 1996       35.8%            37.6%
• 1997       65.1%            23.1%
• 1998       68.2%            25.5%
• 1999       62.5%            32.3%
• 2000       55.0%            39.9%
• 2001       55.0%            39.9%
• 2002       59.7%            39%
• 2003       58.1%            41.9%
• 2004       59.6%            40.4%
• 2005       54.7%            45.3%
• 2006       29.8%            70.2%
• 2007       23.3%            76.6%

  My prediction -"if the Wii-Fit is a success, sonys market share in Japan for 2008 will be under 20%

wii fit will be a success it already is and will continue to,plus SSBB will also help it and then if third parties release more games ninty could end up above 80% like you said