Here lies conflict in its most basic form: capital can easily move across borders while people live in physical homes. In history, this could easily have been thought of as mobile armies versus castles.
We shall see even the upper-middle class will eventually reach a stasis where defending their physical space will cause conflict with the economic top 0.1% whose wealth comes from the international sources rather than static geographic sources. Maybe if we prevent the young from starting families they will remain independent of their physical locations.
Always remember the older a civilization the more static the society. Which translates the need for morals and caring of the elites for the rest of us.