The magic hand of the free market is an illusion created by capitalists trying to fool consumers into thinking they have the power of choice. Someone will only step in to fill in a void if it’s economically viable. Too many people depend on cars, in the US, to just… not buy them. And preparing to fill that void takes a metric fuck ton of capital and time to set up. In the mean time people need vehicles to get around. Not to mention commercial fleets, delivery vehicles and rentals.