There was one Voat. When the one Voat goes bust, Voat goes bust. Like any enterprise, it's failure can be attributed, at least in part, to poor management.
There are many Lemmy's. If one Lemmy collapses, another Lemmy can take its place. The individual instances might be less stable than a centralized social media site, like Voat was, but when federated the whole unit is more resilient than centralized social media.
The problem was that Voat wanted to be something like Truth Social. Basically, a right-wing version of Reddit. That simply wouldn't work, not even as a distant second.
The one problem with this is that most of the content does seem to be pretty centered on only a couple instances (lemmy.world mostly, with some also scattered in beehaw.org, Lemmy.ml, and sh.itjust.works). If one of those goes down, especially lemmy.world, it will cripple this place pretty bad. Maybe if we one day get a way to backup or export user profiles and communities to other instances, but until then, I think this place has a centralization problem brewing as well.
The thing is, the concern people have with lemmy.world is the same concern we used to have with lemmy.ml. The question of how big an instance ought to be is still unanswered. Maybe lemmy.world is below that level and people will naturally shy away from it once it gets there. On top of that, limited resources on the side of instance owners will drive decentralization. For example, Lemmy.ml shut its doors to new users once it became overloaded. Similar things could happen in the future.
Even if a major instance did go down, we'd just lose the content. The people, for the most part, would migrate to whatever new instances sprung up to replace it.
Yeah, Beehaw want to maintain a distinct identity and posting style from Reddit, so they have preemptively defederated many of the most popular Reddit-like instances.
I think it's because even if a bunch of instances follow each other off a cliff, there’s still going to be plenty who didn’t join that group that will survive.
Huh, I guess the survival part just isn't really what I would associate with lemmings, it's the following each other blindly part (even if it turned out to be the result of a fake documentary).