If you grow out of an apparently addictive behavior, doesn't that -- by definition -- mean it was not an addiction?

OK, I know the definition of an addiction is that the behavior is having a significant negative affect, but there must be some notion of lack of control too, I would think.

I know plenty of my friends in college drank quite heavily. Afterward it tapered off. And some of had quite bad grades during that time. But no off us ended up as alcoholics after college. This was 20+ years ago, so one would assume real alcoholism would become apparent in this timeframe.