the essence of hongkong's problem is not "democray" or " to vote for presidency",but the wealth distribution/disparity.
In hongkong ,only real-estimates ,tourism and finance prospers now ,while other economy sections has moved out or disappeared.
However, real-estimates ,tourism and finance can not provide enough decent jobs for ordinary Hongkongese,although they increase lots of money for house-owners class,while most houses in Hongkong are owned by tycoon class.
the lower class of Hongkongese has no chance to afford house all their life . Furtheremore, they also have no issurance of pension.
more the more mid-class are slipping down to "lower class",while most industry sections except finace and trouism have moved out of Hongkong.
So, under the currrent system, except tycoon class and a few house-onwer class, almost all hongkongese can hardly benefit from the persperity of its economy development.