What caused the failure of the new Coca-Cola?

Marketing includes many contents, including the establishment, maintenance and expansion of brands. Coca-Cola's brand grew up during World War II, and its boss associated it with patriotism, American spirit and culture. Therefore, Coca-Cola is not only a product, but also represents a cultural spirit. As a national brand, it belongs not only to the company, but also to the American people. This failure is not only because the connotation and meaning of the brand are difficult to change, but also because of the strategy. Coca-Cola Company immediately removed the old coke from the shelves when the new coke went on the market, without giving consumers a buffer.