Hong Kong is economically doomed because of politics. Anyone with a knowledge of how repressive governments work will tell you when you think those in charge have surrendered to the cries of the people victory often turns out to be fleeting.
It is logical to think that China has been busy gathering information on its enemies in Hong Kong and even if protests subside China will be slow to forget what they have done. This means Hong Kong is living under a cloud. The article below details this and why people are leaving the area in droves.