I think that, in theory, you can’t really move all your money outside of China. In practice, I’m pretty sure there’s a huge loophole in Macau where you can exchange all your RMB money for casino chips and then exchange them for dollars (or something like that) instantly, allowing you to move huge sums outside of China. There are probably a thousand other ways to bring out money we surely don’t know about.
There are tons of millionaires and billionaires in China, and I doubt they want to be at the complete mercy of the CCP. They’ve been moving money outside of China for decades now, with this and other loopholes. Many of the billionaires are complicit with members of the party, obviously, sharing the money with those in power in order to do what they please.
I mean, if they are fleeing, they are fleeing with their money. Capital is essential for an economy and if capital leaves the country, it means that you have less growth, less investment and less prosperity in general. You can’t even tax that capital once it has left the country.
Plus, many of those low-millionaires are probably some of the most competent and knowledgeable people (not the hundreds-million industry captain with ties to the government, but the plant manager or lead researcher, lead developer etc. i.e. those who’ve made a small fortune through their ability). Getting rid of lead people is not exactly beneficial for an economy.
And sure, making everyone poor will reduce apparent wealth inequality, you’re right.