Yeah, but they have a special program for Taxi's that allow what they call "self-insurance" where the taxi is insured by a bond or letter of credit with the MVA.
Yup, the difference between a taxi and an individual though is the taxi company will create an individual llc for each taxi so if a given taxi is in a bad accident they will just bankrupt that llc and try to skip out on paying anything.
When there is an accident, injured parties go after rich people, like the expression "deep pockets", and juries aren't sympathetic to them. Rich people are advised to get (and can afford) insurance more than middle class people.