One issue that I don't think Lemmy has tackled collectively is the licensing of the user data. Lemmy is open source and that's one crucial part of the enshittification resistance equation. The other is doing the equivalent for the user data. If the user data is licensed under the right version of the CC license, it will ensure that it can always be copied to another instance in cases of instance enshittification. As far as I know, there isn't anything about who owns the user data. That defaults to every author having copyright over their data. While this means the instance owner can't sell it without permission from every user it's also not conductive to moving bulk data across instances. Individual migration would improve this significantly but I believe we should switch to having user data licensed under some CC license too.