2-3 users have more than half of it, so it can't be bought. They're not selling.
Just 1 user have 76m

Yes that would Strength in Numbers Foundation and we're about to withdraw it out of the exchange which is going to create a lot of block rewards....
Make sure to set your wallets to "Compete for Block Rewards (POW) or turn on "setgenerate true" in the console or commandline
-dvd