The amazing thing about the gum is its secret flavor. No one knows what the flavor is except for the company who made it and they've been keeping it a secret for years. They have been able to market the product in all kinds of ways over the years and are able to gt the public to buy many sticks of gum.
Wrigley's Juicy Fruit gum is certainly a household name, and has been for decades. It is undoubtedly what made his fame and fortune; however, he had a great many accomplishments in his lifetime, including his help in developing the Santa Catalina Island in California, a number of building projects, Wrigley field in Chicago, and the Arizona Biltmore Hotel in Phoenix.
No, the gum is not Wrigley's greatest accomplishment, because the legacy of Cubs baseball is far greater. Wrigley field has maintained its name and now the name is historic. It hasn't been renamed U.S. Cellular field or American Airlines stadium or anything like that. The Wrigley brand has stood the test of time for the Cubs.
William Wrigley's Juicy Fruit gum is certainly an iconic and profitable product, however, it should not be considered to be his greatest business accomplishment. Rather, his greatest accomplishment should involve the building of a profitable business that employs thousands of people and includes many successful products. Wrigley's Spearmint gum is another great product after all.