Membership (2021) 95,148,000
https://en.wikipedia.org/wiki/Chinese_Communist_Party
Seems to scale pretty well.
Are you suggesting that High school kids and taxi drivers would be effective board members?
This is just the normal Chinese gov control everything narrative that people who've basically not spent a lot of time in china tell themselves for whatever reasons.
CCP preserves CCPs power. That's its main focus, it controls what it needs to, to do that. Which it achieves by controlling just the top tier business like 10-20 of them. The other 25,999,980 businesses would likely never hear anything from the CCP in any meaningful way.
This is not dissimilar to how government has fairly significant influence over Amazon/Apple/Facebook etc in the US.
Note: I'm not defending CCP here, they do stupid/bad stuff but controlling every single business is not one of them.
There are a lot of broken things in the US but it does have some modicum of separation between business entities and the government as well as a sort of psuedo attempt at rule of law.
[0] https://www.theguardian.com/world/2019/jul/25/china-business...