There is probably some huge selection bias on that FFXIV part. I'm a Brazilian expat, so this post mainly comes from that point of view.
The amount of Brazilians that can dedicate 5% of a minimum wage towards one game's subscription per month (plus 20% of a minimum wage just to buy base + ShB) AND has a decent enough gear to run the game AND can tick one of those JDEF boxes means you are selecting for what, less than 1% of the Brazillian community? Less than 5% of Brazilians gamers?
WoW has language support, about half the cost (because of localisation price, not even counting paying for the sub with in-game monies) and can be run on a glorified potato.
You can bet your ass if there was a localisation effort for South America, those servers would be a pot of trolling, toxicity and shittyness. Just like WoW's "SA" servers.