Interesting article. You might want t read the following:
https://geopoliticalfutures.com/why-mexico-belongs-in-north-america/
Some investors feel that Mexico has the potential to be a very important regional power. i.e. it's North America, not South America.
Nice. Actually, I think it's possible that Mexico might be in a class of its own. From a regulatory perspective, Mexico is much freer than the US. It's possible that in a few years, many companies might decide to set up shop here because of that. Time will tell.