Fedibridge

I’ve got great news for you. You can create the same community on any instance you like.

I am aware of that. In fact myself did exactly that a year or so ago.

And the issue still stands. Someone just hopping into the Fediverse is likely to have incomplete information about it. If they have a poor experience in one instance they likely won't migrate to another instance, but instead blame the issue on "Lemmy" as a whole and go back to Reddit.