I find this developement rather interesting and wanted to share some thoughts:
Since part of my profession is "storytelling", in the sense of creating a credible narrative for products, people, events etc., I have been following ED's storytelling quite closely and had been researching lore and past developements in the ED narrative.
In the ED universe people in 3304 basically still work and live following the same patterns we do now (sometimes even more the ones from 1984

, which are: sleep - work - eat - repeat. So apart from no major social, sociological or anthropological progress within the "next 1400" years (which is big btw, just look at the progress we have made in the last 1400 years!) and adding that ED economy is a free market one, we can take todays terms to speculate about a second bubble.
Minding that and furtherly taking in account that ED is a simulation of "real" events, I don't see any exculpatory "reason" for humanity to find or expand to a new habitat. Surely ED can just fabricate that, but would you take that serious or wouln't that feel very artificial?
Unless, as many migration examples throughout history show, humanity and humans are only driven to leave their habitat because of
a) economical reasons, like there exists a rare commodity which is needed in the old bubble and which transport to the 1st bubble is good business (1849 California gold rush),
b) ecological reasons, like natural catastrophies which make large parts of the bubble uninhabitalbe or even destroy it (1986 Chernobyl) , or
c) war, like a large scale internal conflict or someone/-thing attacks the bubble and (part of) humanity has to flee somewhere save (2015 Syria).
Otherwise there is no existing behavior pattern, not instictively, consciously or subconsciously, that would make man move there to establish a new or second habitat. And that man would settle there just for fun, seems further than far-fetched to me.
Anyway, we'll see where our FSD (or the storytellers from ED) will take us...
Fly save, wherever to!