They didn't even need to make a datacenter in SA, just put one of the datacenters on the East coast of the US, like World of Warcraft does. This would lower our ping in Brazil and the rest of latin america considerably and would also be good for ppl in Canada and on the East coast.
Right now the internet route for every player in SA is going to the east coast of the US and then having to pass through the whole US to reach the servers on the west coast.