If everyone can’t have it, no one should. That’s the stance that Blizzard is taking when it comes to using a mouse and keyboard to play Overwatch on consoles, as those players presumably have a huge advantage over controller users in response time and precise action.
On the official forums, Game Director Jeff Kaplan wrote a terse post a few days ago stating the studio’s position: “The Overwatch team objects to the use of mouse and keyboard on console. We have contacted both first-party console manufacturers and expressed our concern about the use of mouse and keyboard and input conversion devices. We have lobbied and will continue to lobby for first-party console manufacturers to either disallow mouse and keyboard and input conversion devices or openly and easily support mouse and keyboard for ALL players.”
As Kaplan points out, there is no official support for keyboards and mice on these consoles yet, although that hasn’t stopped some from figuring out a workaround. VG247 notes that many of the top players on Xbox One and PlayStation 4 use a mouse-and-keyboard setup via special converters.