Because the real economic value of those jobs is less than a "living wage." A delivery driver is not a skilled job. I know, I delivered pizza when I was in col

Because the real economic value of those jobs is less than a "living wage." A delivery driver is not a skilled job. I know, I delivered pizza when I was in college. And that was before mobile phones or navigation apps so drivers actually had to learn their way around their delivery area. If you have a drivers license and a car you can be a delivery driver. That's not a very high bar. So those jobs don't pay very much.