AT&T is so big people in different parts of the company often have different opinions. An insider told me T was going to use millimeter wave widely, believing it would attract enough customers to pay off. He saw it as a land grab situation against Verizon, who is firmly committed to tens of millions of homes passed. "Whoever is first with 5G millimeter wave will win 10% to 20% of customers away from cable. We will be in a race to be first in many parts of the country." Their technical people have been preparing a large build. At least one thought the company strategy would be like Verizon, deploying quickly to get that first mover advantage.
The man with the money is dubious. He's more inclined to grow fiber home where they already have fiber nearby. It's "Very inexpensive." He wants to focus on building fiber to the 30M homes passed by U-Verse in district. They've already fibered 10M of them and are doing 3M/year. Broadband in district has been flat to down. They are getting clobbered where they haven't upgraded. So protecting a "fortress AT&T" is a sensible strategy.