> There is no value to me, or others, from having the the driver "licensed to carry passengers."
The value is in that the license can be taken away if the owner does not comply with the appropriate requisites for the activity. The relationship between a taxi driver and their passenger extends way beyond the mere act of driving, so the driver's license is not enough.
The value is in that the license can be taken away if the owner does not comply with the appropriate requisites for the activity. The relationship between a taxi driver and their passenger extends way beyond the mere act of driving, so the driver's license is not enough.