You'd be surprised.
These are actual replies to the Kotaku article on the subject. Looks like there is indeed a defense force for everything.
I kind of agree with Atlus too, but I think they're going about it all wrong. What they probably need to be working towards is getting the same protections against "Unauthorized broadcast" of gameplay footage as you have for movies. Let's get those FBI warnings added to the pre-title screen logos!
For me, live streaming is basically Rifftrax for videogames. The content provider ostensibly is trying to add something to the presentation, whether it be humor, behind the scenes details, etc. When you buy Rifftrax, you only get the audio overlay, you still need to go out and buy/source the actual movie itself if you want to watch along.
There are arguments to be made about allowing streaming affecting sales in both directions. I can understand why people are upset, even if I don't agree with them.