There is a theme in the industries China does well in - western regulators ban cut-throat competition, China competes very hard and wins. The situation at scale is pretty straightforward. Usually it is environmental or labour policy, so this case of the root cause being sanctions is a bit unusual. But, once again, how Nvidia is meant to compete in China when their best products can't be sold there?
E: And state can, but I don't know if state generally willing/able to backstop companies to 50% margin long term. I can't think of any, maybe some major state oil. Nvidia/TSMC with $$$ margins getting some CHIPs injection really meant for bailing out broke ass Intel was already anomalous, and it was basically to bribe them to onshore production.
This tends towards the economic reality but it certainly does not match it.
Except the market pretty much can't do this with Nvidia. Nobody is showing any sign of catching up: it is entirely possible we are seeing a runaway train and without the intervention of a massive state like China to create a viable competitor, there will never be one.
The problem is not regulation, it is the lack of it: anti-monopolist practices and deregulation of the finance industry has led us to insane bubbles, dead markets and extreme wealth concentration. Any competition gets bought, crushed, or undercut via bankrolling. This is what you get when the 0.0001% gets to pull the strings again. Must watch (3 parts): https://www.arte.tv/en/videos/103517-001-A/capitalism-in-ame...
It’s literally state sponsored monopolies.
Also you take is highly simplistic. Even the small players are command and control. You’re likely just not aware how it works.
What helped was the public outrage over the insane profits the American oligarchs reaped during WOI. This enabled Roosevelt during WOII to set a maximum profit margin for the oligarchy owned factories and fined those who evaded the law. It was a shock for the conservatives to see how the bureaucracy turned America's mediocre output around with a fast, efficient and lean production monster. The monopolists had to resort to propaganda, claiming the government's success as theirs, injecting the falsehoods we now all take for granted.
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1. As an exercise, think what would be possible if all the cash piles didn't sit at big tech, but instead enabled competition. Meta isn't still more than a useless addiction factory.
Western semi still "safe" since west+co aren't going to source from PRC leading edge due to national security, but pretty soon they're either going to need to compress margins to compete which means cutting costs, which means cutting R&D because shareholder going to get theirs or western semi business model going to run on permenant subsidies. Which is what will probably happen considering their performance is why stonk lines go up right now. That 1T PRC spend and choose to simply discount for utility chips is going to wipe multipel trillion of western semi market cap and all the economic implications that entails so it might not even be bad idea.