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That's not how this works...
You can't be serious to think that if Microsoft will pay these 2 billion that they could instead make 20 more AAA games? Where would these games come from? Every gaming studio is already working, it's not as if they sit in an office and wait to get more money to make a new game...
Opening new studios would also cost more as many think since it's not an investment for a few years and after the money is gone everything will be like before...
Not to forget that Microsoft won't pay that money just for a game, they would also pay it for all the merchandising stuff, increasing the amount of people who will use Microsoft accounts, to sell some Windows OS and so on... so that there is no "if we don't spend 2 billion for this studio we have 2 billion for other games"
I just hope some guys will never open an own business and think they can calculate like they do in forums.
