The 10 year plan isn't incorrect. In fact, 3 consoles have shipped more than 10 years after their respective releases. This is solely for fun reasons, and isn't really made to prove a point.
Also, the title is incorrect. It should have been "the 20 year plan".
The NES was released in 1983. In Nintendo's half year report for 2003 (which can be found on the site here: http://vgchartz.com/worldcons.php?date=37865&sort=0), NES shipped 10K. More than 20 years after its release.
The SNES was released in 1990. In the second half of 2000, it shipped 10K. More than 10 years after its release.
The PS1 was released in 1995. In FY 05 it shipped 1.6M. 10 years after its release.
So, this far. Every "winning" console has shipped more than 10 years after their releases. The 10 year plan remains intact.









