"The arc of communism is long and it leans towards oppressing the fuck out of people. It’s a tendency of all governmental systems. Communism rests most of its power in the hands of government without a moneyed elite to oppose them, so it tends to move to authoritarianism faster and with less resistance."
I'm not accusing you of making those silly arguments, but those silly arguments are a frequent end of this line of reasoning, so they are worth watching out for.
Contrast that with
> China’s parliament has about 100 billionaires
https://www.cnbc.com/2017/03/02/chinas-parliament-has-about-...
Like all communist nations, there is a ruling elite.
Since it breaks down by divisions, so for example taobao would still be the top e-commerce competitor. Not to mention, despite being huge, I can't say Alibaba has monopoly in any of their services.
In the US, if the FTC decides to block your merger or the government wants to split up a company, the company can bring the government to court, on a equal footing and argue it's case.
That's not happening in China.
My understanding is that economics and governance are largely - though not completely - orthogonal.