Beats me.
Though it may be tough without a MAJOR PARADIGM SHIFT. And who knows what that might be?
Check out these graphics:


So, what will lure people back? Vertical corporate campuses where you live and work in the same tower? Vertical hydroponic farming?
Whatever it is, something better start filling those buildings with people soon, or urban areas could see RAPID DEGENERATION in quality of life occasioned by significant DEPOPULATION.
And since CIVILIZATION is still about MASSING IN CITIES — and this despite DIGITIZATION — we don’t want that to stop EITHER.
So, PUT ON YOUR THINKING CAPS!