Despite its growing success, Open Banking (OB) struggles to present a coherent identity, resembling the subject of the famous Italian novel “One, None, and a Hundred Thousand” by Pirandello. Indeed, despite its widespread adoption around the world, various models can be identified based on rationales, the nature of data-sharing obligations, and the standardization process. Against this background, instead of merely illustrating these differences, the paper aims to evaluate the consistency of OB policies. To this end, our analysis adopts a novel approach by examining the primary rationales behind OB regulatory initiatives in some major countries (i.e., the EU, UK, Australia, the U.S., India, and Singapore). Identifying these rationales is crucial for assessing whether the specific features of OB solutions implemented in each country are align with the intended policy goals. Additionally, such a comparative analysis will help policymakers in countries considering the introduction of OB to design a model that best suits their needs.