People tolerate the CCP because of the clear material gains they have seen in their lives. If some strongman authoritarian stood with a megaphone on Main Street and credibly promised Americans one tenth of that gain in prosperity, they'd elect him dictator for life.
they know they won't be - people's demand continues to grow, and not just material wants, but "spiritual" wants (aka, they want more representation in the political system to make decisions). Of course, this only manifests after some material wealth threshold has been reached.
It's also why i conspiratorially believe that the CCP is deliberately ensuring chinese yuan is continuously debased, and kept artificially low. It ensures that the people's wealth in general is not high enough to reach that threshold i mentioned above.
and yet, are the citizens getting their fair share of said productivity growth? Or has it been obsorbed by the CCP, in which the wealth is then allocated to something that said citizen would not have chosen to allocate to?