I wonder. There's certainly some field they're gonna milk money out, why else pay so much money? That'll never be because it's from the good of their hearts.
Would you stand for your principles and refuse this much money because you want to keep minecraft as it is if it was your creation?
I definitely wouldn't. Man, if I was bettering the world philanthropically on a level that I was fighting hunger, corruption worldwide and human trafficking, you'd probably have me think for a few seconds when getting offered this much money...
Imagine what it does to you when you "just" have a freaking game that they're offering to buy from ya.
I would, in less then a heartbeat. I wouldn't even consider if it was worth more then 2 billion and ask other parties if they'd be interested. I'd cash in and yeah, would be shit to see your life's project/baby be commercialized and killed by the A holes at MS, but shit man, 2 fucking billion!
You can invite all your minecraft buddies, sip margeritas on a beach and if someone's still interested in minecrafting, you just let the local reseller bring you a giant box of legos! Sheesh....