Why does the state control trust companies so strictly?

In order to protect the interests of investors and maintain the stability of financial markets, state-controlled trust companies are so strict. As a financial institution, the trust company's business involves a lot of money and the interests of investors. Once there is a problem, it will have a serious impact on the financial market and social economy. Therefore, the state's supervision of trust companies must be strict to ensure their legal and compliant operation, prevent risks and protect the legitimate rights and interests of investors.