Your post is confusing. I'm not sure what you mean by Nintendo copying Sony. In what way, specifically, should Nintendo copy Sony.
If you mean Nintendo should copy Sony and make excellent games, then I disagree. Nintendo already makes excellent games.
And even if Nintendo didn't already make quality games, and then later decided to make quality games, that wouldn't be an act of copying Sony. Making quality games isn't intrinsically associated with Sony. Plenty of companies make quality games. It's not just Sony. So, making quality games wouldn't mean they're copying Sony.
If of course that's what you mean when you say Nintendo should copy Sony. I'm not really sure the point you're trying to stress.