It would be relatively easy to write a script/bot which fetches the list of communities from a given instance, and then subscribes to all of them from another instance. In fact I heard something like this already exists, but dont know the name.
I think its totally normal that instance sizes follow a power law distribution. Its similar to many other things, for example there are few large cities, some medium cities and lots of small cities. The wiki article lists many other examples. So I think its fine as long as there are no intentional attempts to lock in users into large instances or limit federation.
It works pretty well on Peertube, only lacks users and quality content.
You can already interact with Peertube videos and follow their channels. Thats possible because Peertube also federates groups (communities). With Mastodon thats not possible because it doesnt have groups, and Lemmy doesnt support content outside of communities. At least not without a full rewrite, which doesnt make sense considering that KBin and dozens of different microblogging platforms already exist.
I think FEP-2100 is a much more promising approach because it makes communities more resilient in case an instance goes down.
Lemmy was meant to be a Reddit replacement from the beginning, so it was always supposed to take off. Even in the early days the tech was working quite smoothly and users were happy so there was no real doubt about it. The only thing missing were more users. However I had no idea how a real migration would actually look like, so it was really overwhelming when last year people started to flood in and everything got overloaded and broke down.
The SQL table for posts is 1.6 GB on lemmy.ml, and 5.7 GB for comments. That probably accounts for a majority of content on the Lemmyverse.
Any breaking changes which get implemented in the meantime. There are no specific plans.
Wait for Reddit to implode, more users to migrate and donations to increase. It worked last year :D
In the future it could make sense to make a protocol extension to send multiple activities in a single HTTP connection. But for now its probably not worth the effort, considering that it would break compatibility with other Fediverse platforms.
From NLnet we had three funding rounds with 50.000 Euros each.
That is true because admins pay for the servers and are legally responsible for the content they host. However anyone can quite easily become an admin, the hosting cost for a single user instance is very low.