It gets discussed a lot there.
Anecdotally, there was a lot of discussion within the fediverse when threads was announced and the general sentiment that a lot of people had, was that instances should immediately defederate from threads to avoid eternal september.
Personally, I argued for staying federated with them because I think that would lead to a healthier fediverse. What I envision is:
1. Most normal individuals will be on a corporate-backed, ad-supported instance like threads.
2. Companies and governments will be on custom-domain instances managed by a fediverse service provider who they pay directly, both for branding and in order to avoid being beholden to the poor customer service of the corporate-backed instances.
3. Some tech-savvy individuals will be on small or self-hosted independent instances that provide a differentiated experience in some way. (This is most of the current fediverse)
This is basically how email works now and so it seems like the most likely end-state.