My friend C-, who lives across town, noticed the AT&T U-versites proselytizing his neighborhood. They never came to his door, however.
How come? C- finally stopped one of them and asked.
Your house is not on our list.
We can't get service to you.
But you talk to both houses on either side of me, and the ones across the street.
We'll look into it.
Now, C- holds a Ph.D. in Computer Science, a few patents, and actually Knows Stuff. Maybe AT&T is getting wise that the technically-minded are a pain.
They'll look into it.