Dunkin Donuts failed for a few different reasons. The first reason is that they did not invest in their digital presence. They did not have a website, and their social media was not effective. This caused them to lose customers to the competitors. The second reason is that they did not keep up with the trends. They did not have any new products, and their menu was not updated. This caused customers to switch to the competitors. The third reason is that they did not have a strong marketing strategy.
They did not spend enough money on advertising, and their marketing was not effective. The fourth reason is that they did not have a good customer service. They did not have a good response time to customer complaints, and their employees were not friendly. The fifth reason is the Dunkin Donuts failed because they did not have a good business model. They did not have a scalable business, and they did not have a plan for growth. This caused them to fail.