At least for Japanese users, they want to see content they love from creators relevant to them. Creators = illustrator, comic artist, photographer, cosplayer, writer, etc.

Creators want a stable platform that allows them to widen their reach and potentially making more money.

Mastodon at the moment are tend to be hostile against creators that wants to monetize their work. Not to forget, the creator you want to follow are on defederated or blocks your instance for random admin drama.

But hey, at least fediverse software like Misskey actually trying to serve these community. Like allowing community ads (like promoting indie comics, vtuber, or social event) and trying to be stable by resolving any potential instance problem together with zero drama. Misskey community also often have tendency to "decoupling from Western tech supremacy"