>>35901465As a talent agency it's actually not bad. Talents are a talent agencies revenue center. If you have only a few very successful talents these talents get power over you, becasue they can easily hurt your revenue flow. By having a lot of talents, you lessen the impact they have and thus put the power balance to your side.
Running a talent agency in Japan is about control, you need to be in the powerful position to control your talents, to an extent that could possibly violate their constitutional rights (control over private lives).
The whole culture of keeping an VTubers identity secret also plays into this.
Having a star who carries the company, basically makes you dependent on them. But you want them to be dependent on you.
The counter point would be the cost of managing them and giving them support.