>>88770182Short answer: Yes
Long answer: No one knows exactly for sure, and if someone tries to tell you otherwise they are lying through their teeth, but a decently popular holo is probably easily bringing in 6 digits a year. Some will try to tell you that they're millionaires, but in reality probably only the top earners are seeing 7 digits annually, most of which are also investing it right back into content creation.
The holos that put more into it will see more returns and more opportunities which then circles back to more money, which is also why you see some shill their stuff so much more than others, or how you'll see others in literally every single promo or voice pack.