Agreed Sir ..
The economic indicators of developed countries show an increasing share of Services sector over manufacturing and others.
Traditionally, HK has remained a city state and perhaps can be compared to Singapore up to some extent. Availability of land is a big variable in economic development, and when the land is not available, then the economy changes its course.
HK has so much shortage of land. Before the current Chek Lap Kok airport was built, the previous Kai Tak airport had its runway on reclaimed land in the HK bay. Passengers could see housewives washing utensils in their kitchens. If you go around in HK, it has perhaps the highest population density in the world .. As a result, when you cannot expand horizontally, then you have no way to expand except vertically. You can see very tall pencil shaped building all over HK ...
Coming back to economy, all economies took start as agrarian economies followed by industrialization. HK progressed by leaps and bounds in the industrial sector as they did not have land for agriculture. With good planning by the government, HK made its mark among the Asian Tigers .. and, following the pattern of developed economies, now more and more emphasis is on development of the Services Sector.