Luckily, that is exactly what happened! The law explicitly states that it will be reviewed every few years to determine whether USB-C is still the best choice.
And why would a better choice magically appear though when it’s illegal to put it on the market to let it prove itself? Why would anybody who is actually innovative pay to research and risk such a better choice in the first place? To wait for its review in a few years?!
Sounds like you describe how aviation and other critical tech work. Every single piece has to be checked and validated by the administration, and yet planes keep flying.