Joseph E. Stiglitz, in his book "The Euro: And its Threat to the Future of Europe," argues that the eurozone has consistently underperformed across various economic metrics. He highlights that its performance pales in comparison to that of the United States and even to European countries that do not use the euro. This suggests systemic weaknesses within the eurozone framework that have hindered its overall growth and stability.

Stiglitz points out that the negative effects of the eurozone's economic policies have extended even to stronger economies like Germany, showing that no member is immune from the detrimental impacts of the euro. This analysis emphasizes the need for a critical reevaluation of the eurozone's economic structure and policies to address its ongoing challenges.