I think it’s reasonable to say the CCP will keep their grip on power for as long as they can continue delivering wealth to the middle class, and lifting those in poverty into the middle class. What’s not clear is how long the CCP can continue delivering that wealth.
The ongoing crisis with Everglade is showing that the CCP power and ability to generate wealth is not unlimited. I doubt it’s the beginning of the end, but it does shine a light on the long term structural flaws of their strategy. It’ll be interesting to see how the CCP deals with this over the next 10 to 20 years, maybe they’ll find a new strategy to maintain power, or maybe they’ll start a slow and gentle transition into democracy, allowing them to placate the middle class who won’t be seeing outsized wealth growth anymore.