Each group has but one primary purpose–to carry its message to the alcoholic who still suffers.
I have not personally been acquainted with AA groups that tried to do something else. The text of the tradition goes on to describe a group of doctors, who, working together, could fashion a cure for cancer. Separately they could work on their own talents or specialties, but they would have to sacrifice that to cure cancer, which of course they would do.
It then describes an early 12th step during which the 12th stepper had to approach the person in the hospital with alcoholism and AA only, and it goes on to say that if the guy had been approached with religion or business advice, he would have balked.
To me, it’s just more of the magic of the organization that hangs together so loosely, and so strong.