Fortunately if we've learned anything from recent history, it's that our initial attempts at a solution are almost always successful and rarely are there setbacks, hiccups, or insurmountable obstacles along the way to the perfect realization of your immaculately designed strategy.
And of course monetary systems could go another way that doesn’t end so well for central banks, like:
-high inflation central banks can’t control
-collapse of fiat
-return to a gold standard in some form
-hypercryptoization
-the path of last 20 years of Japan
…or some other unknown turn of events like a war between superpowers or emergence of advanced AI which will turn the economy upside down