What great economic experiment? It is not an experiment to print trillions of yen and basically inflating paper assets. That is a fact and causal relationship. I have no idea what the idea behind all that is supposed to be. There are fundamental differences between Japan and the US. There was a financial crisis in the US and all that was needed was a restoration of faith in the system. The same clever entrepreneurs existed before and after the crisis. As soon as faith (note I would never use the word trust in this context) was restored business startups could again go about their business which is the precise reason why the US's economy has relatively improved more than the ones of others.
The situation in Japan is entirely and utterly different. Japan lacks an entrepreneurial spirit because the framework is not conducive to investing and starting up businesses. It is hostile to the idea to have female managers in leading positions. It is hostile to the idea of change in general. And most large formerly successful corporations have no idea what to do next. Their employees, researchers ran out of ideas, and they are too proud and well fed to go out into the market place to the same extend they did in the 80s when they invaded the US and set up shop everywhere, learned quickly, adapted, and then improved to create superior products. Sony is the perfect example of where Japan stands: A morally and mentally bankrupt company with no ideas, no products, little research, maybe 1-2 leadership divisions among 50 other divisions that either lose money or go nowhere. No money printed in the world will change that. Nothing but structural reforms. And Abe will be the last man on earth who will embark on structural reforms because he would not even know how to spell it. He represents old school, those who worship at Yasukuni shrine just because he feels more indebted to his right-wing fanatics in his party than to the idea to mend fences with the Chinese to bring about a true structural change. This man will go down in the history books as "the former prime minister while Kuroda was BOJ governor".