Who in their right minds put ads on LPs? I have several LPs and streamed quite a few Nintendo games from start to finish. I never have had ads on youtube for LPs nor have I ran commercial during streams.
If people wanted to donate money to me for LPs, I wouldn't turn it down. I don't ask for them either - ever. I don't disagree with Nintendo, however, I think they need to loosen up a bit. If the LPs have monetization turned on from the fan/youtuber account, flag it for copyright and take over the ad revenue as most companies do. If no monetization is turned on and no ads placed into the video(such as a 30 second ad added to the LP before it is uploaded, then let it stay as it is. No need to "punish" those who seek to do LP for pure entertainment purposes.
Nintendo gains nothing(or very little else) except hatred/animosity towards itself as an IP hoarder. Regardless if you agree with it or not, much of the younger generation seems to be following suite to freely exchange entertainment and information...Facebook is one proof of that.
Anyway, to keep a rant out of it, eventually, either the companies or the people will win some day. If companies do, the entire entertainment industry is going to change...and not necessarily in a good way at all.
But, still, Nintendo isnt necessarily wrong, just taking it a bit too far.