Call me surprised. It would seem as if American Airlines, with its new "Fly Better" program to attract customers to its brand, has begun to offer complementary beer and wine to all passengers aboard American-operated international routes.
Here's a link to American's website on this new program.
Enjoy complimentary beer and wine when you travel in the main cabin onboard American's international flights. Customers traveling on American-operated flights between the U.S. and Europe, the U.S. and Asia and / or onboard flights between the U.S. and Argentina, Brazil, Chile, Uruguay, Bolivia, and Peru can choose from a variety of complimentary beer and wine options, in addition to the full selection of nonalcoholic beverages.
Here's a link to American's website on this new program.