Why do people think that Nintendo could go or should go third-party?

[Cloudman]

I feel that it is more a matter of 'should' because it's likely the people that make that statement like and want to buy Nintendo games, buuuut not enough to buy their hardware. Why else would people say so? If they didn't care about Nintendo games, they wouldn't be making this comment.

Nintendo could go 3rd party, and may be beneficial if they did. It's hard to say though. Perhaps they would get more sales being 3rd party and multiplat, or not. It's a scenario we will unlikely ever see.