The US, China, Russia and all the other big nations that have developed tremendously didn't just do that because they wanted to adapt to any system. They did that because they were able to understand how the world works and put out effort to position themselves at the top by becoming thier own competition. The USA wants are educational system to be better than that if China and China wants same. All of them are arriving to be the best innovative country and that in turn causes them to outgrow other nation that's relaxing and that's not putting out any effort to ensure that they equally grow and become relevant like the countries at the top.
It is the indecision of the stagnated country that made them remain the way they are while the proactivenes of the countries that aiming for the top has helped them to continue growing and advancing in almost all areas.