Sure some devs do it. But there are large companies across Mexico and South America that have a huge number of willing and able devs within the same time zone.

Sure some devs do it. But there are large companies across Mexico and South America that have a huge number of willing and able devs within the same time zone. This means you can easily supplement your existing dev teams with individuals in the same time zone. Time zone matters when you are wanting devs to be part of your existing teams.