I was wondering why this difference in pricing policy for different routes. Here is what I got out of it. Foreign airlines are free to price their round tickets from their country of origin (except if there is a restriction from their own country) and a round ticket selling in Brazil if there isn’t a Brazilian carrier doing the same route. If there is a Brazilian company doing the route (country), then for round tickets selling from Brazil, they have that upper and lower boundaries mentioned in the article. That is the system in practice today; and yeap, Brazil residents are the main suckers here. That explains why sometimes is cheaper to buy a ticket in US/Europe to Brazil than Brazil to US/Europe. Brazilian companies attend mainly South America, and then they attend just few cities in USA & Europe.
What is supposed to be implemented within a year is the open sky policy, that was already approved, but without specify the implementation date (great...). This policy will delete all those bilateral agreements in place today. They can be checked at ANAC (National Aviation Civil Agency) site at: Agência Nacional de Aviação Civil
As you can imagine, the guys representing the National Carriers (I would say one only international, TAM) are furious. One of their representatives was accusing the new ANAC administration of being filled with “a bunch of neoliberals” , that “will allow the big companies to practice predatory pricing and run wild after put the smaller Brazilians companies out of business”, and blah, blah, blah… Because the same company will be hurt for a possible liberalization of domestic market, they are planting news that in the US only national carriers can operate and foreign participation on those companies is limited to 25% (Don’t know if this is true, possible; but still domestic market in the US is more competitive). These guys are not going down without put up a fight…
So that article was referring to the implementation of the open sky policy, where pricing restriction and number of flights should be erased to all routes, whether round tickets are bought abroad or internally. The implementation date was verbally announced, within a year, let’s see what happens. For domestic routes open up will certainly take longer. But hopefully will happen too. They are mad and eager to protect their "easy earned money", but on the other side of the table, there are several business being hurted too, besides consumers, eager to protect their "hard earned money". Now, it's wait and see .