

Misskey is like “the default” fediverse software for Japanese and (Asian) ACG (Animation-comic-games) communities.
This side of fediverse is relatively big, but almost their community rarely reach out Western fediverse mostly due to language and law-related stuff. They have unique photography, online comic market, and and various creative centric community that rarely found on mainstream Western fediverse.
In fact, before Mastodon.social, the biggest fediverse instance is Japanese – Pawoo.net. At that time, it was managed by Pixiv (Japanese equivalent of DeviantArt), but later sold to random corpo, the moderation collapse, and now abandoned by its community.
The chances are some new foundation/non-profit will be created to fund its development.
It’s either gonna be great like other community-oriented project (like FreeCAD, Blender, or KDE), or corporate-centric that prioritize industry needs (O3DE, OvertureMaps).
Though, there’s Servo and Libweb as potential future replacement. Servo is managed by Linux Foundation Europe. Libweb is managed by Ladybird Browser Initiative and so far have structure like other community FOSS project, like Blender or Godot.