The entire point of AA is not to focus on the singular behavior of problem drinking, but instead to produce a complete psychic change. The central theme of the "Big Book" is that simply removing the alcohol from an alcoholic is not enough. The alcoholic must instead completely change their way of living and interacting with others. The program is designed to address the root cause of many specific issues the founders saw to be common among alcoholics.
Furthermore, it is highly encouraged to seek outside help (psychiatrists, therapists, etc.) if needed.