It had never occurred to me to see Brave as a collectivism vs. individualism story; to me it was obviously a woman-as-object vs. woman-as-subject story.

Collectivism vs. individualism seems very similar to person-as-object vs. person-as-subject. It's magnified here because it's specifically queen/princess instead of simply mother/daughter. The analogous story that drops the princess/queen dynamic is making the family the exact same people, except they're all peasants. Merida's betrothal has been bought by a neighboring peasant man through gifts to her family, but she doesn't want to marry him. She runs away to Paisley, earns enough money working in a textile mill to pay the man back (obviating her social obligation to marry him), and then she's free to live her life as an Independent Career Woman.