>>24795128I think it's very simple, besides what other anons have said, scarcity breeds demand. I think this is why Hololive in general can still rake in money despite overall not streaming nearly as much as their rivals. This is basically Nintendo's business strategy, especially with consoles. Spend a lot of time initially gaining a passionate and loyal fanbase, then deliberately starve them of future content, releasing it piecemeal. This gets people talking, and when the content does drop or replenish, people get FOMO and rush to it, since they genuinely don't know when it's going to come again, and they want to experience it live with other people. Ayame did do this, probably unintentionally, as she streamed quite a lot initially, but dropped off later.
I also think this is something the holos in general have done unintentionally, but the overall effect is the same. It's part of the reason unarchived karaokes get so many more CCV's than all other types of streams. FOMO's very powerful. It's lost (and made) people millions, sometimes billions, on many occasions.
Another thing is time. People don't like getting into things that look like they're gonna take too much time, since that's a hard commitment to make. Ayame is a very easy commitment to make since she has comparatively little material vs. her coworkers, and it's easy to keep up with her as a streamer. If something is going to take a lot of time, people take refuge in the familiar and the comfortable, for vtubers, a nice model and a cute voice/demeanor. Haachama not only streams more, but you don't know what to expect. This makes that investment hard for people who have finite time and a comfort zone, which is most people.