Xbox head honcho Phil Spencer says that PlayStation wants to "protect their dominance on console." He continues on to say, "the way they grow is by making Xbox smaller." These statements by Spencer were said on the Second Request podcast.
Spencer says that Sony just wants to retain its console dominance by opposing Xbox's acquisition of Activision Blizzard. His full statement can be seen here.
"There’s really only been one major opposer to the deal and it's Sony, and Sony’s trying to protect their dominance on console, and the way they grow is by making Xbox smaller.
"They have a very different view of the industry than we do. They don’t ship their games day and date on PC, [and] they don’t put their games in the subscription when they launch their games."​
"They have a very different view of the industry than we do. They don’t ship their games day and date on PC, [and] they don’t put their games in the subscription when they launch their games."​
"But because Sony’s leading all of the dialogue around why this deal shouldn’t go through to protect their dominant position in console, the thing that they grab onto is Call of Duty, and we’ve said over and over that we’ll make a multi-year, 10-year commitment to PlayStation."