Not sure why everyone's blaming PDP for what Nintendo is doing. They've been against streaming their games way before the PDP fiasco. Nintendo was always sending out takedown notices and demonitizing videos and outright banning streams. They kind of changed their stance for a while with their program and now they're back to what they were doing before. If Sony or MS suddenly changed their methods, you could kind of blame PDP I guess but this has always been Nintendo's M.O.
It's more like, Nintendo was finally starting to come out of their shells with creation of this program, the treehouse stuff, the deeper outreach to the greater community using a number of personalities that people seemed to like. But their inability to control all of it internally was always a point of contention. PDP's antics seemed to be the action that scared them back into their shells.
And honestly, it's fine. Those hurt most by this will be Nintendo themselves as they will not be able to rely on the same grassroots advertising that comes naturally with youtubing and live streaming. If Nintendo thinks they can handle being the sole source of advertising for all of their products going forward (spoilers, they can't), then more power to them.
I'm not saying that doing this is a smart move, it's not. I just understand WHY they're doing it.