Their business has run into trouble a couple of times because MBA types in the company lost sight of this, then focused on trying to sell drinks efficiently. Thereby diluting the brand and business.
If you've got 22 minutes, https://www.youtube.com/watch?v=Ym7YwFq8ZuM is a very informative walkthrough of the history and the business by the always funny youtuber, The Fat Electician. Highly recommended.