I wonder what carriers would supply names? With a land line, if you pay for an unpublished number, your name won't show up on a Caller ID display, will it? It seems to me that a cellphone customer is paying for an unpublished number. Unwanted calls to a cellphone can be terribly inconvenient as well as costing the customer minutes.
Suppose in a traffic jam, you call the dentist to say you'll be ten minutes late. Six months later your cell phone rings as you drive to work. You have told nobody your number except your wife and daughter, and they know you don't want to be called while driving. Thinking it must be an emergency, you reach for the phone and wreck your car.
The next day your phone begins chirping during a funeral. Because your wife and daughter are with you, you never expected this. By the time you turn it off you are getting dirty looks.
The day after that, it rings while you are in the checkout line at a supermarket. It's the dentist's receptionist reminding you to schedule a checkup. You are in no position to check your schedule.
If you start getting calls like that because a receptionist's computer got your cellphone number from Caller ID, won't you be likely to change carriers?