Is MS going about acquiring games the wrong way?

[Norris2k]

I agree that it would have been great for them and for gamers if they created new studios, supported existing studios and licenses, etc., just the way everyone else do or did : Sony, Nintendo, Sega, etc. They keep throwing out their studios and games, while Sony made Naughty Dog built itself for 10 years to become one of the greatest studio.
But I really think there is a possibility that they bought Mojang not just for 1 license. They would never repay such a sum with one game, they are betting on the studio or did see a new game or concept that they think is worth betting on, be it Minecraft 2 or not.