Basically, a tourist Visa is really easy to get in the LATAM countries, but they don't support Esports as an actual profession/sport so you can't get a athletic, business, or entertainment Visa which would be needed for VCT which takes place for most of the year. There are also a lot of legally grey areas in Esports and generally less infrastructure to support it. There are also a few other issues, but it take a couple paragraphs to explain so I will refrain from doing that.