Non-hailed cabs are regulated in many cities as well. E.g. in NYC the TLC regulates black cars as well as yellow cabs. https://www1.nyc.gov/nycbusiness/descrip

Non-hailed cabs are regulated in many cities as well. E.g. in NYC the TLC regulates black cars as well as yellow cabs. https://www1.nyc.gov/nycbusiness/description/livery-car-base-license https://www1.nyc.gov/nycbusiness/description/livery-car-base...