Hong Kong was a colony where all significant decisions were made by a European power. (Which imposed economic, legal, and political systems that it developed during a monarchy.)
Yeah people had personal freedom, but they couldn’t do anything with it.
Is Hong Kong now more prosperous, after it moved to authoritarian rule?
What are your criteria for "authoritarian", that you count Japan among authoritarian countries?
What is your evidence that the authoritarian policies were the deciding factor in generating prosperity for these countries?