AIUI the VTuber scene is very YouTube-centric compared to most other streaming subcultures, so it's easier said than done in this case. If they're doing this professionally (or trying to) then they need to be where the audience is.
There are two almost distinct VTuber cultures. One is Twitch-based, livestream-oriented, and sees vtubing as an extension of individual livestreaming. Another is YouTube-based, balances livestreaming with VODs and recorded videos (particularly music videos), and sees vtubing as an idol-unit-style group activity.
I think it may actually depend on the region, Japanese VTubers seem to primarily stream on YouTube but international VTubers lean more towards Twitch. Maybe OP could jump ship in that case.
Is it possible that being a VTuber isn't a sustainable profession, then?
If only one company exists that can pay people to perform your role, and that company capriciously locked random employees out of all systems over a misunderstanding, and it's seemingly impossible to start up a competitor or find any other way to get paid doing it... maybe find another job?
It most certainly is. In most cases, it is much easier to find a job while you have a job than it is to find a job when you don't have a job. The action isn't "quit preemptively", the action is finding another job now, instead of making some other investment you would With your time today.
Why should someone give up pre-emptively on the thing they want to do simply because of a risk of corporate bullshit? You're just saying "get a real job", the classic dismissal of creatives everywhere.
