Big business cares about operating in an environment where the government of the day doesn't wake up one day and decide to nationalise all assets Hong Kong remains the best place in China for that kind of security. I mean sure this is best achieved through a friendly, corrupt dictatorship, but Hong Kong isn't a bad second best.
The Brits never gave Hong Kong democracy and fair representation and they did fine, no?
Sure but I'm talking about here and now, not the past. We both know the historical reasons for Hong Kong's prosperity, but in the current situation capitalist corps (the organisations that control economic power) are more comfortable with the Hong Kong way of doing things (hell some of the most important are HQed there) and that counts for a fair bit, and that is something that hasn't been exported to the mainland.
Certainly China is changing rapidly and most of the reasons why Hong Kong was the only viable place to do business are gone; when it gets to the point that the CCP no longer feels threatened by Hong Kong's desire for reprsentation then all advantages will be gone. But in that situation Hong Kong will become China's pride and joy, not a place viewed by suspicion.
I mean really I get the impression you want to get rid of the 'one nation, two systems' approach because why should the wealthy Hong Kong elites get the political priviliges?. I agree with that sentiment, but I want everybody in China to start acting like Hong Kong instead of forcing Hong Kong to act like the rest of the mainland. China's halfway there anyway with the CCP's reforms, and in terms of culture (plastic surgery, cars instead of bicycles etc.), it's really just political power that the CCP is holding onto.
Shifts of influence and commerce in this age goes without further rhetoric.
Yes it does happen, but it doesn't happen easily, you're underestimating the effect of inertia, if a place is good for business then it tends to remain a choice place to invest, and the growth of other regional powers doesn't kill it... hell the powers can feed off each other in certain situations.
Everything you bring up are transitory factors that will wane as the city's indispensability dissolves
Not the most important factor to my mind, the people. The people of Hong Kong are well educated and capitalist. This will change in the mainland as infrastructure gets built up, *but* the biggest reason why Hong Kong people are that way isn't infrastructure, it's because they're open to outside influences to a far greater degree than the censor happy mainland Chinese. That's the biggest factor to my mind, and I don't see that changing anytime soon. I might be wrong but like I said earlier, if that changes and the mainland becomes less censorious then Hong Kong will go from being looked at as the rebellious uppity troublemaker to the commercial, banking, trading capital of China that will funnel prosperity to the mainland.
Hong Kong as it is, desire for democracy and all, has the potential to be China's greatest asset. The mainland should make use of it to its fullest potential and not try to force it to give up its unique qualities to bring it in line with the rest of the country.