>>79807758JP? No idea. If there even comes a day when it gets shut down, and assuming the IPs are taken with them that would leave a huge void in the male vtuber market. Maybe we see a surge in fans for other male branches/vtubers.
EN is already one foot out the door like
>>79808916 said. They're for the most part now isolated with some exceptions. A significant, and potentially majority of the male fans have already left with the Pomu and Selen departures, and in terms of SC only Scarle and somehow Aia of all people remain rather relevant for female vtubers. The males did take a hit, but I think it's been more so a combination of Mysta leaving AND the whole drama rather than just the drama itself.
The void they've left has been filled. Whether it be VShojo and Ex-Niji's taking their chunk with them, or smaller corpos like Phase, PixelLink, Idol, etc. And if things continue as they are, NijiEN will only get smaller since they practically can't get a single foot in the door in terms of just having a fucking W.