Not sure where you get this information, instead there a research show that in the long time rich people is think to move out of Hong Kong. This research is done 2 years ago, it might get worse now
Top Ten Today
1. London
2. New York
3. Hong Kong
4. Paris
5. Singapore
6. Miami
7. Geneva
8. Shanghai
9. Beijing
10. Berlin
Top Ten By 2020
1. London
2. New York
3. Beijing
4. Shanghai
5. Singapore
6. Hong Kong
7. Paris
8. São Paulo
9. Geneva
10. Berlin
This data show that long run the rich is consider to move out.
Top Prime Property Buyers (Second Homes)
1. Russian
2. Hong Kong
3. British
4. French
5. American
6. Swiss
7. German
8. Chinese
9. Singaporean
10. Canadian
Again this show that the rich in Hong Kong is buying second home overseas which mean this their long term plan