Like I said in my post, I don't think the interactive part really means a lot on its own. Once you've already seen someone playing the game from start to fnish, once you already know all there is to see and the solution to everything, playing a game usually isn't very fun anymore.
You can make the case that people who watch the entirety of a Let's Play are exactly the kind of people who wouldn't buy your game in the first place -- and you are likely right. But I still don't think that it justifies making money off something someone else spend millions upon millions to develop.
I don't have a problem with LPs per se, don't get me wrong. But even without making money with them, they are kind of a gray area and actually making money with it strikes me as wrong. I don't agree with Nintendo taking
all of the money, however. Ideally the money would be shared between both parties -- I wonder if YouTube's policies allow for such a thing?
You probably have editorial content that doesn't involve making a video from Nintendo's entire games.
It really is that specific part of showing games in their entirety I'm having issues with.