This will most likely go down like the American Eagle debacle where on a trial basis they charged pax $1 for a can of soda and it backfired. There is a minimum level of service that Americans expect on a flight and I believe receiving a complimentary meal on an international flight is one of them.
What happened with American Eagle, how did it backfire? That sounds more dramatic than ~two months later, American Eagle quietly resumed complementary beverage service...~