Just remember the years prior to the creation of the euro and the relationships between the Bank of France and the Ministry of Economy and Finance. It took until the law of August 4, 1993, for the Bank of France to see its independence enshrined in law. This was the result of a long evolution that had seen it transition from being a capitalist company owned by the 'two hundred families' to being nationalized by the law of December 2, 1945.

But ownership of capital and independence are not antagonistic.

The twelve U.S. Federal Reserve Banks continue to be owned today by the large national banks of the United States: the Federal Reserve Act of 1913 mandates the amount they must hold — 6% of their capital — and prohibits them from reselling these shares or using them as collateral. This means that U.S. law requires national banks to capitalize the central bank: what matters is not the control of capital, but the exercise of monetary power.