[auganov]

I don't know the history of China's takeover of Macau. But in case of Hong Kong it was mostly legal and diplomatic reasons (of the UK). Taiwan is an independent democracy, it's very unlikely they'd willingly agree to that.

Personally I'd rather bet on the CCP loosing/giving-up power than Taiwan joining the Mainland. And Hong Kong could possibly be one of the triggers.

Not to mention US loosing Taiwan [and South Korea] as huge allies would be almost as bad as loosing Israel. They won't let that happen.

[pedrosorio]

Same for Macau:

"Shortly after Portugal's 1974 Carnation Revolution, which overthrew the Estado Novo dictatorship, the new government determined it would relinquish all its overseas possessions. In 1976, Lisbon redefined Macau as a "Chinese territory under Portuguese administration" and granted it a large measure of administrative, financial, and economic autonomy. Three years later, Portugal and China agreed to regard Macau as "a Chinese territory under (temporary) Portuguese administration".[17][45] The Chinese and Portuguese governments commenced negotiations on the question of Macau in June 1986. The two signed a Sino-Portuguese Joint Declaration the next year, making Macau a special administrative region (SAR) of China.[46] The Chinese government assumed formal sovereignty over Macau on 20 December 1999.[47]"

in https://en.wikipedia.org/wiki/Macau#History