Again, how about some specifics on where AA is hiding behind protectionism in Latin America?
There's no asterisks for you to hide behind on your statement.
Waiting.
If you and MAH can't grasp the concept that GRU is the single largest and richest market in Latin America and has enormous effect on a carrier's ability to compete in all of the region.
Neither DL or UA is going to enter MIA-Latin America which is the single largest market in Latin America until it is close enough to being able to compete in MIA-GRU which is the largest market within the region.
Every carrier is well aware of AA's size in Latin America and its dominance of MIA. You don't pick a fight with a carrier when you enter that fight with one arm tied behind your back.
For now, DL and UA will focus on building Latin America from its own hubs and to cities where it can generate the highest amount of revenue.
GRU, just like every other market, is not a horserace for market share even though that is how AA has treated Latin America for years now - throwing in capacity as fast as it can. Have you noticed that AA's RASM growth in Latin America has not been keeping up with its capacity growth? AA is adding capacity so fast that it is willing to limit its average fare growth in order to stake out new markets. IOW, AA's costs for the new capacity is growing faster than their ability to generate revenues to cover those costs. If they were as certain that they are and will remain #1, they wouldn't be throwing capacity in so fast that they are pushing down their yields.
DOT statistics will clearly show in time whether AA's new LAX-GRU service generated acceptable yields but the chances are real high that the route will not generate sufficient revenues to cover costs on a flight that is as long as to Asia. Further, AA is adding more capacity to a market that has never had that much capacity and AA chose to continue with the flight even though slot times at GRU are different from what they wanted by several hours.
DL is not starting a new flight to ATL on a sustained basis with a departure at 2 a.m. from GRU which is what they would have had to do. The new GRU-ATL flight will depart in the same prime bank of evening US departures. Even though US is improving its GRU-CLT departure, it will be leaving after 2 a.m. which will make it the last departure to the Americas. Not exactly a great schedule to attract business passengers which make or break int'l flights.
AA is in a market share race in Latin America because they realize that Latin America is the only global region where they or AA/US will be dominant on a sustained basis.