I understood you to mean that you wondered why the marketing decision that Coke made to change its recipe was then reversed.
The reason is that taste-testing showed that people liked a sweeter product, Pepsi was running ads with blind taste-tests at the time, and the management at Coke panicked, and forgot that they were the custodians of an iconic brand, and that people cared deeply for its authenticity.
No brand is ever likely to make a similar mistake again.
If I have misunderstood your question, please enlighten me.