govt workers are very rarely fired...so they are not afraid of abusing the system like this
If they buy anything in a state with sales taxes, they pay sales taxes.
If they legally own a car, they pay vehicle taxes. If they buy gas for that car, they pay gas taxes.
Nearly every man, woman, and child in the United States pays taxes.
Here are some examples of patronage in order of diminishing accountability: Employer-Employee, Consultancy-Client, HugeStore-Customer, Government-Subject, Mugger-Victim.