From their homepage: "By 2050, the population in cities will double, intensifying existing socioeconomic, public health and environmental problems."

Yes.

People move into a few big cities because companies companies like Google congregate there, ultimately creating problems such as skyrocketing rents, congestion, declining real living standards, homelessness.

Google holds an obvious solution in its hand. By altering their way of working they could support remote working, creating clusters of specialized work forces and communities online rather than in a narrow physical location.