Japanese are not as conservative as you think.
And you are basing that on what? Please give an example. Also, keep in mind that the "big money" in Japan is with the older generation, so even if the younger generation may seem to be more open minded, they don't have the money to invest in new things.
If Japanese are conservative, Japan can not become the most advanced country in Asia.
Most advanced in what? What year? Please be more specific.