Cities can't send a bus everywhere, and taxis are rationed, requiring families to have personal transport: But that needs to end. It's costs valuable space, money and infrastructure, mostly so people can drive to work at the same time and ignore their car for 6-10 hours. Cars need to be an 'on-demand' service, like hot pizza. The easy answer is, taxi drivers are paid a fixed wage, not a gig-economy model. But no-one wants the taxi service to become city infrastructure, like trains and buses. A "taxi and ride (and taxi)" model will increase the utilization of train and bus infrastructure, transferring work-load to the efficient mass transport services and making them much cheaper. Even, off-peak commuting (Eg. shopping and recreational sports), that can't be shifted to buses, doesn't require large parking lots and 8-lane thoroughfares, under an on-demand model.