Nintendo isn't the giant corporation that Sony is. They don't have profits from thousands of other products to fall back on. Nintendo can't take many risks financially.
However, Nintendo does take more risks with console design. PS3 follows most of the same things PS2 did prior. Wii and DS are completely different than their predecessor.
Nintendo took a very small part of gaming (fitness games) and turned it into a giant part of the gaming market, with tons of games trying to steal some of the success of Wii Fit.
In my eyes, Nintendo takes just as many risks.








