Megacities will have no reason for existing except to house surplus humanity.
“Manufacturing on the fritz … Decline of the shopping mall… The new work force: Robots, AI and the human cloud”
“At some point, all this change may end up meaning that economies of scale matter much, much less. If that happens, population size — currently the motor of the modern metropolis — will become a liability.
Megacities have long struggled with the downsides of density and rapid urbanization, including communicable disease, critical infrastructure shortages, rising inequality, crime and social instability. As their economic base erodes, such challenges are likely to grow more pressing.”