I think there are good reasons to not let corporate interests join the space we built to escape them, but I guess every instance is free to (de)federate with whomever they want.
So let's say my instance (mander.xyz) defederates from Meta but another Lemmy instance that meander.xyz federates with (let's say "misguided.ml") does not. What happens when someone from Meta comments on a post from misguided.ml and others from misguided.ml comment on that comment? Will I see the comments on the meta comment, but not the original meta comment itself? Or will I not see the entire thread?
That's correct, any thread starting with a Meta comment will disappear from your perspective.
On the other hand, assuming Meta hasn't defederated mander.xyz, Meta users could still see and comment on posts that you made on misguided.ml. You wouldn't see any of their comments, but users of misguided.ml would be able to.
The fediverse is a natural response from corporate interests, which most of the cases involve freedom of speech and some dank humor.
If meta decides to join the fediverse to reduce their payload and spent less cash on hosting solutions, that is fantastic and they are welcome to do so.
But meta joining the fediverse will not mean to give them full control of the decentralized network, so there is nothing to fear of, naturally they will defederate uncomfortable communities in order to remain "normie friendly"
We can do the same but i believe our stance in the fediverse is to remain open, borderless and decentralized AF
I think there's a chance meta or another big company will attempt to take over. This could be by creating a new client or library that everyone starts using and then suddenly make breaking changes that aren't part of the official activitypub protocol.
Google used to use XMMP for it's chat but eventually it was no longer compatible with 3rd party servers.
No idea what will happen, just don't get too complacent. Being decentralized now doesn't mean as much if a couple giant entities end up owning 90% of the network.
This is what could happen. Learn from XMPP and don't let corpos into the Fediverse.
ActivityPup is an open and public protocol. Anyone can use it however they want, but as a community we do have some control over who we federate with, so excersize that control.
There wouldn't be an empty spot, your instance would never know that comment was there to begin with. You would be able to see it if you clicked through to the other instance of course.
to be sure that your posts don't end up on the META Servers you need to post with ACL - Access Control List - but since lemmy does not offer that jet you may have to use an other fedi software with ACL