Obviously the business model of AT&T has changed and evolved over the last few years. Now that the former BellSouth has basically expanded as wide horizontally as it can, in terms of owning telecom companies, it has been seeking to expand vertically into media ownership with its purchase of Time Warner. It's interesting to me since AT&T was a founding company is radio ownership, at one time owning radio station WEAF in NYC, but then selling it to help form NBC. That was at a time when they saw themselves as a transmission company. Clearly that view has changed. Here's an interesting conversation with the company's Randall Stevenson about what it means to the company as it expands into media and content ownership:
https://www.bloomberg.com/graphics/2019-opinion-att-hbo-hollywood-plot/
https://www.bloomberg.com/graphics/2019-opinion-att-hbo-hollywood-plot/