Apparently you can make a blank comment with Lemmy. Fat-fingered the send button. Anyways...

That's one reason why we need not centralize on any one instance, so that the whole set of communities isn't lost if a big instance goes rogue. However, in the nightmare scenario where an instance goes rogue and it happens to contain huge communities, we can simply [1] pick up house and move somewhere else, specifically to a new instance, your own in the worst case.

It's not that we'll never lose communities or that the problem of power-tripping mods is completely solved. [2] It's that, because the system is distributed and decentralized by design, the whole system won't die if one big node goes down.

Eventually, all these instances are going to die because all things end. However, the Fediverse should be able to continue as long as users are interested in using the service.

The success of centralization as an organizational principle hinges on the success of its central hub. If that one hub is corrupted (and it will be), the whole system has to deal with the consequences. To recreate this situation on the decentralized system, you need to corrupt a large enough set of the entire network, which is possible but much harder to accomplish.

Additionally, I imagine that the Internet Archive or someone else will start archiving our content, although we shouldn't rely on that.

[1] The Reddit exodus so far has shown that transplanting an entire community, e.g. a subreddit, is not at all simple. However, it should be easier once people learn how to use a Threadiverse app, because Kbin and Lemmy are quite similar.

[2] The problem of "power-tripping mods" is really a special case of the problem of "power-tripping people" in social organization. In my view, anarchism and similar decentralized social movements have laid a ton of groundwork and theory for robust federated social systems that are not contingent on having perfect actors, although the problem is of course not fully solved.