Earlier quoted context omitted.
This is already starting to happen. A bunch of countries suspended extradition to Hong Kong after all the recent power consolidation by China because while they trusted an independent Hong Kong to have reasonable limits on its judiciary they do not trust China to do the same; after all this is a country that dismisses "rule of law". And in fact the whole protest situation was caused by Hong Kong's Government introduc…
And the reason for the initial bill was due to a Hong Kong citizen murdering his girlfriend in Taiwan. Taiwan and Hong Kong do not have extradition treaties. The murderer is still free in Hong Kong.
The rational response to "hey the country who originally requested the extradition doesn't want to do it anymore" would be to shelve the bill, but at that point the Government and CCP wanted to save face and dug in their heels. Which makes the whole situation an extremely stupid case study of how not to de-escalate a situation.