No.
It is about short sighted stupidity.
I am sure Ecuador and Peru and Venezuela citizens pay to enter USA or OZ but they have the BRAINS not to try and gouge that back.
Lets see .. Americans visiting Ecuador for Galapagos cruises etc will be 50 times the number Ecuadorian visiting the USA.
You do not have to be a Harvard MBA to work out you do not want to stop THEM coming, as each cruise and airfare runs $4,000 a person minimum.
Same with Macchu Picchu and Cuzco.
Glen