Yes, the CCP can say jump and expect their corporations to do so, but when everyone in a modern economy jumps at the same time, massive oversupply is the result. More market-based economies are also prone to similar overproduction when everyone gets caught up in the same mania (see AI datacenters), but investors will eventually stop lighting their money on fire when it becomes clear that the returns aren't there. Chinese companies, on the other hand, will just keep jumping until the CCP decides that they are done jumping.
Our feedback loop is geared towards only doing things that provide a return on investment. Their feedback loop has things like social stability and global competitiveness as competing goals to actually doing productive work.
Yes, they are able to accomplish a tremendous amount when they set their minds to it, but doing a tremendous amount more of something than there is actual demand is waste, the opposite of efficiency.
https://www.reuters.com/investigations/china-is-sending-its-...
Sounds like you're making the case for their system here!
The CCP does put a heavy thumb on some scales, but so does every country. Perfect efficiency is not optimal when circumstances change, so states always enforce some redundancy.
There are many differences, of course, but just don't get the idea that China consists of monopolies in a command economy. They call it "capitalism with Chinese characteristics."
I cannot give you proof for the line of political thinking. :)
> ...having a monopoly in one country is a strategic advantage over other countries.
Having a large, unified domestic market is a strategic advantage because it enables companies to grow to a size that makes them formidable global competitors [0]. The United States and China are examples of this phenomenon. The point isn't whether it's advantageous to allow such companies to become monopolies. Once these companies reach a certain size, politicians are reluctant to break them up because they don't want other global companies to take their place.
China being a good example. Google being a monopoly in the rest of the world doesn't really impact them much since they just block the foreign products.
Specifically, the EU has no ability to fight foreign monopolies. Though, it has an ability to fine them and extort some pocket money from them. However, this hasn't had a tangible effect on creating more competition in those markets.