Actually, the AT&T U-Verse boxes USED to be made by Motorola, but now they all come from Cisco. Wouldn't Cisco be responsible for licensing of the software on the boxes, and the cost get passed on to AT&T?
And I don't know too much about Tivo, but I like my AT&T U-Verse where I can record shows from ANY STB in the house, and WATCH from ANY STB in the house... HELL, I can start a show in one room, pause it, and resume it in another room. If I lose my DVR, I will just go back to downloading the TV shows I want to watch again....