Why are individual states denied the current sea power?

Individual states are denied significant sea power primarily due to international law, specifically the United Nations Convention on the Law of the Sea (UNCLOS), which governs maritime rights and responsibilities. This framework promotes the concept of freedom of navigation and the common heritage of mankind, limiting the ability of individual states to exert extensive control over international waters. Additionally, the complex nature of modern naval warfare and the economic costs associated with maintaining a powerful navy typically necessitate collaboration among nations rather than unilateral action.