Dunno. I doubt a lot of them have the chops for it, and I don't think vtubing works like soccer, were you get the retarded former players into managerial roles and they keep failing for twenty years because nobody outside of the industry is interested.
Marine has the chops for it, her contact network is ludicrous, as is her ability to expand it. Her natural charm is off the charts, she has experience with desk work, and there's an argument to be made that quite a few of her projects are already her doing quasi managerial work as is.
But the others? AZKi, maybe. Polka? After that it gets rather thin, IMO.
Regardless, tales of Hololive dance practice:
nigga did you forget that Mikeneko its literally
allowed to exist
while living a wealthy life even after all of her yabs.If she can live a stable life then any Holo can: They just need to stream after retirement and thats it. I think the only ones that may need a plan are Homos that arent that popular
Even so having a plan of what to do after like Kiara its a plus