Why, historically, has the soft drink industry been so profitable?

Very little information was available to both scientists and the general public about the properties of soft drinks. The industry also mastered advertising by using psychology to convince radio-listeners or television-viewers that their products are safe, delicious, and make for a great time. Think of all those Coca Cola commercials that you watch every now and then; try to remember the upbeat music, the party vibes, the overall message that the soft drink makes everything better.