The Fed prints a fraction of a fraction of the actual money in circulation. Private banks in practice control the money supply. As such, they want to maintain their monopoly.

The countries that have innovated the most in regards to automated payments are the ones trying to escape US influence: look at PIX in Brazil, BRICS pay, etc...

In America, the payment system is an oligarchy, they protect their own (the bankers), what need is there for innovation when they are making a killing out of the current inefficiency?

The one place where the US haven't been slow is in stablecoins, making them dollar donominated, to ensure the monopoly the US dollar has on international trade stays strong. That way, when the US has a crisis, they take down the rest of the world too, to the joy of non-US countries.