Cheapness of labor is not necessary for the system the author is describing to work (although it's probably a factor in how that system is able to be the present equilibrium). The system in Quito may be less efficient (i.e. there may be waste, like extra guys with trucks waiting for customers), but it's also less efficient at concentrating capital. Whether wages are "low" depends on the ratio of those inefficiencies. I can imagine a world where the latter "inefficiency" is maintained as the waste is reduced and wages rise. It would require "gig economy" coordination tools to match capacity to demand efficiently, but the market tech would need to lack power over the workers, whether because of competition or regulation.