>>66185802Archetypical cascading failure. Some parts of a system start to fail, and the rest of the system cannot take the additional strain so they fail too, and so on and so on until the system fully collapses.
On NijiEN, I think the point of no return, the crossing of the Rubicon was when Kuro bailed.
It was not only their first top talent leaving, but also he milked it to the very last possible second....just to immediately redebut in VShojo.
Which, sure, is a job, the hustle is real and he doesn't owe anybody anything. But it was a clear signal that the problem is specifically with the branch itself, and it just made everybody that much more cynical on following graduations. It was a before and after on the fandom.
Also, on the specific case, let's be honest. There's a strong possibility that the branch gets folded into JP and has what little support they have gets completely cutoff before the year is over. Facing that, there's a strong incentive for everybody to leave while they can still get good offers.