Yes, but "some things" are bigger than other things. This thing is too big to buck. AA will follow suit.
No it's not. AA is bigger than both of them. It doesn't have to do anything it doesn't want to do. Plus, it's already profitable with the current AAdvantage program.
While some foreign carriers do points, many don't. This is a global market with global competition. Let's not get too myopic and think that it only matters what happens here.