Why was pepsi one discontinued?

As of my last knowledge update in January 2022, Pepsi One was not officially discontinued. However, it's important to note that product availability and decisions by companies can change over time. If there have been any developments or changes since then, I would not be aware of them.

The reasons for discontinuing a product can vary and may include factors such as changes in consumer preferences, declining sales, or strategic business decisions. If Pepsi One has been discontinued since my last update, I recommend checking the latest information from official PepsiCo sources or news articles for the most accurate and up-to-date information on the status of Pepsi One.