The problem we have in the U.K. where most housing has a shortage of parking is people assume they have a right to store a car - typically one per adult too. If their property doesn’t have a space for a car they therefore assume that means there is a requirement for the public to provide the space. That view is by far the most common view, therefore vast quantities of public space is used to store people’s private possessions.

By removing the mandated private space for storing vehicles, you increase the public space used to store vehicles.