I think one reason could be that online gambling is regulated by governments and regulatory bodies, which may require companies to collect certain information about their customers for compliance purposes. That could make it difficult for gambling platforms to offer strong privacy protections without running afoul of these regulations. Another reason could be that gambling platforms might have incentives to collect customer data for marketing and analytics purposes. This data can be used to better understand customer preferences and behavior, allowing the platform to target its marketing efforts more effectively, and potentially increase its revenues. It's also possible that gambling platforms simply have not prioritized the development of privacy-enhancing features, or that they believe that the benefits of collecting and using customer data outweigh any potential privacy concerns.