Y'know, thinking about it, I wonder if this might be a way of tiptoeing around the FTC to not cause legal concerns, rather than outright buying WarnerMedia, Comcast could take their time and do small purchases when they can, taking things that can then be used elsewhere.
May benefit certain groups especially, like WBGames, Wizarding World, and DC. Two of those, Comcast doesn't have a direct hand in (IE, Publicization of comic books and novellas, and the other being able to have a hand in game development).