The new Investors and younger generation of India and China feels that the economic growth of their countries are non stopple and the growth is going to be there for ever. May be this growth continue for another decade, but at one stage, any growth has to see a saturation.
Saturation will be followed by the period of negative growth. The economic cycle will always see a high and a bottom. May be the growth and slow growth time periods may differ, but that will happen.
After the World War, Japan concentrated more on their economic growth. So Japan attracted lot of foreign investments from all over the world and the Japanese invested in all countries. The growth was phenomenol since 1950 to 1990. Their Stock Markets peaked in 1989 when Nikkei was trading around 39000.
Since then, for the past 20 years, Nikkei crossed its all time high of 39000. Now it is trading around 10000. It is one fourth of its all time high of 39000. So, a generation on Investors has never seen the peak in Japan.
The same will happen to India or China in the future. People has to learn lessons from Japan.